Tokyo · Nishi-Shinjuku | Airport bus and twin-room space
Shinjuku Washington Hotel Annex
Shinjuku Washington Hotel Annex
Before staying at the ANNEX, first sort out the main building, the annex and the room type you actually need
Photo source: Trip.com hotel gallery
I would compare it for airport transport and a 25 m² twin room
- The ANNEX is an annex building — do not read “new building” as meaning every room’s facilities are definitely new.
- Standard twins are 25 m², basic twins 17.6 m² — both twins, yet the gap is not small.
- Breakfast can be taken on the main building’s 25th floor or the ANNEX’s 1st floor, and the connecting passage between buildings includes an outdoor section.
Travelling to Tokyo with large suitcases, I care a lot about whether I can move my luggage one less time after arriving at the airport. The airport bus and large-hotel functions of Shinjuku Washington Hotel Annex are reasons worth comparing it for — but it is not a stay a few steps from the JR platforms.
This hotel is often called the “new building”, but the official name now used is ANNEX / annex. When choosing a room, I would set aside the impression the name gives and look directly at size, bed width and bathroom. For two people wanting room to move, a 25 m² standard twin fits the need better than the most basic double room.
The main building and the annex are not two completely separate worlds: breakfast, some functions and transport guidance can be shared, but check-in must be done at the building you booked. Sorting out these routes on the first day saves a lot of effort on the days that follow.
Transport: the airport bus is practical, but check the stopping services first
The address is 3-2-9 Nishi-Shinjuku, Shinjuku-ku, Tokyo. Officially, JR Shinjuku Station’s south exit is about an 8-minute walk and Tochomae Station about 5 minutes; dragging luggage, not knowing the route, or crowds mean I would allow a more generous margin — the 8 minutes cannot be taken as the total time from platform to room.
The hotel has limousine buses to and from Haneda and Narita airports, which is very convenient for large luggage. First confirm whether your arrival terminal, time and service really stop at Shinjuku Washington before buying a ticket — not every Shinjuku-bound bus drops you at the hotel entrance. Do not leave the return to the airport until the last night to check either.
Walking from Shinjuku through the underground passage can reduce exposure to rain, but the official passage hours are currently 6:00 to 22:45. For late returns, prepare a ground-level route — an underground connection does not mean it is usable 24 hours a day.
The official south-exit underground route goes via KEIOMALL ANNEX and One Day Street; after reaching the main building’s basement, annex guests need to go up to the 1st floor, then take the outdoor connecting passage to the ANNEX. This section is not fully indoors; people who need a lift or step-free movement should confirm the connections separately with the hotel and station staff, and not treat escalator guidance as a wheelchair route.
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Room types: do not just write “twin” — sizes differ a lot
Annex single rooms are 14.2 m² with a 120 cm bed; standard doubles are 15.5 m² with a 140 cm bed; deluxe doubles are 20 m², also with a 140 cm bed. Upgrading a double adds activity space, but does not necessarily add bed width, so two people’s sleeping habits should be considered together.
Basic twins are 17.6 m² with two 100 cm beds; standard twins are 25 m² with two 110 cm beds, and there is also a wide-bed version at the same 25 m² with two 140 cm beds. I would ask friends travelling as a pair, each with a large suitcase, to compare the 25 m² room types first, and not assume the space is the same just because both have two beds.
Deluxe twins also come in 33 or 40 m² with 120 cm beds; triple rooms are 25 m² with 100 cm-wide beds. When three people travel together, both headcount and luggage increase, so I would look especially at the routes between beds and at the entrance. Sharing a bed with children has age, headcount and per-bed limits, which should also be entered for the actual party.
Guest impressions of the rooms vary widely: some praise the twin-room space, while others find the double rooms and bathrooms very small. Reading the room-type names together makes these seemingly contradictory impressions easier to understand; I would not conclude that all room types are the same just because one review calls a room spacious.
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Main building and ANNEX: sort out check-in, laundry and amenities first
The ANNEX counter is on the 2nd floor and the main building counter on the 3rd floor. Officially, each guest must check in at the building they booked; after arriving by bus or walking in from the underground passage to the main building, remember to check the booking name first and not queue at the wrong counter with luggage in tow.
Some toiletries are collected by guests themselves from the amenities area, located on the ANNEX 2nd floor. This is convenient for anyone who forgot a small item, but I would take only the amount actually needed in one go and confirm before returning to the room, to avoid discovering a missing toothbrush only after a shower.
Self-service laundry facilities are on the main building’s 1st floor and the ANNEX 2nd floor, and can be used on multi-night stays; this is shared laundry, not an in-room washing machine. There is no large public bath or fitness facility, so travellers whose trip centres on bathing or hotel exercise should look for an option that fits their needs.
On check-in and check-out days, a guest-only self-service luggage storage area can be used. If I want to go shopping on departure day, I would store the large suitcases first, then plan the last meal; the storage scope follows the day’s rules, and it should not be treated as a free warehouse to return to after several days.
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Two breakfast venues to choose from: a view, or a shorter walk?
Officially, two breakfast venues are shared: Manhattan Table on the main building’s 25th floor and Fujita on the ANNEX 1st floor, both Japanese-Western buffets. Staying in the annex does not mean you can only eat in the annex, but the restaurants served and their hours may change with operations, so ask on check-in which are open that day.
Currently, the official hours are Manhattan Table in the main building from 6:30 to 10:30, last entry 10:00, and Fujita on the ANNEX 1st floor from 7:00 to 10:30, last entry 10:00. The adult breakfast reference price is 2,750 yen including tax, as checked on 25 October 2026. If you head out early, the main building starts earlier, but still allow time for moving between buildings and waiting.
I would want to schedule the high-floor breakfast on a day when the itinerary is not rushed. Some guests prefer the main building’s selection and views, while others find the breakfast price does not match their appetite; that is a difference in travel habits, and there is no need to call either venue the one everyone should visit.
If I have an early train to catch, or just want a light bite before heading out, I would choose a plan without breakfast and use nearby convenience stores and restaurants. If travelling companions have different breakfast preferences, a buffet makes it easier to sit down together and then go their separate ways after eating. When comparing plans that include breakfast, remember to calculate for the actual number of people who can eat and the number of days.
The photos also include restaurant displays from meal periods other than breakfast. Night-view tables, hot-pot dishes and formal dinner settings are not a guarantee of breakfast supply; to know the day’s dishes, go by what is on site.
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com guest photos
Photo source: Trip.com guest photos
Nearby: Nishi-Shinjuku works well split into a walk and a shopping trip
The Tokyo Metropolitan Government Building and Shinjuku Central Park direction suit a fairly relaxed walk. Guests have also shared photos of the Metropolitan Government Building’s night projections; if you want to go specially to see them, plan your outing by the current programme, and do not treat one day’s colours or times as fixed for every day.
I would shop around Shinjuku Station in the morning, return to the room in the afternoon to drop things off and rest, then walk towards the Metropolitan Government Building area for dinner. That uses the Nishi-Shinjuku location well, without carrying shopping spoils through the station all day.
There are convenience stores and restaurants in and near the hotel, so a simple meal is easy when it rains or you are tired. However, people who like shopping around the east exit late every night should accept that there is still a walk back to the room; “somewhere to eat downstairs” and “every shop you want right beside you” are different needs.
Photo source: Trip.com guest photos
Photo source: Trip.com guest photos
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Photo source: Trip.com hotel gallery
Short and multi-night stays: count airport convenience first, then daily walking
For a single night bookended by airport trips, the hotel bus would be my first comparison point. If the services connect, it cuts transfers and luggage handling; if they do not, I would go back to evaluating train routes, rather than paying extra waiting time for an imagined direct service.
Staying several nights in a row, I would raise the priority of room size. Walking back to the hotel every day after sightseeing, the limits of a small double room can become more obvious; a 25 m² twin and shared laundry functions fit everyday life better than simply chasing the lowest grade.
Official check-in is 14:00 and check-out 11:00. Cleaning frequency was mentioned in original reviews as not being a full clean every day, so confirm the current arrangement before booking or on check-in; if you need beds and bathrooms tidied daily, state the need clearly, and do not treat another guest’s one-time arrangement as your own guarantee.
Before booking: do not take the ANNEX name as a guarantee of newness
In the original reviews, evaluations of how new the facilities are, cleanliness and service are inconsistent; some guests who stayed on renovated floors thought it was very good, while others still felt a sense of age, and another guest was unhappy with dust cleaning. I would go by my own room type and actual arrangements, check the bathroom, bedding and everyday equipment after check-in, and raise any problem early.
Room orientation, floor and pillow feel also differ. If you want a quiet room or an extra pillow, you can request it in advance, but you cannot take one guest’s quiet corner room as meaning every room is equally quiet.
With large luggage and older companions, what I care about most is the inter-building connecting passage and underground passage time: these are not small print on a list of drawbacks, but roads actually walked every day. Looking over the routes in advance is usually more comfortable than changing route on the spot after arriving.
Pros and trade-offs comparison
| Aspect | Upside | Trade-off to accept |
|---|---|---|
| Airport | Limousine bus stops at the hotel, less luggage handling | Check your own terminal and service first — not every service goes direct |
| Rooms | 25 m² standard twins and larger room types to choose from | Basic doubles at 15.5 m² and basic twins at 17.6 m² are still compact |
| Buildings | Main-building dining nearby and shared breakfast available | Different check-in counters, and the connecting passage includes an outdoor section |
| Rainy days | Underground passage reduces getting wet in the rain | Open 6:00 to 22:45, not step-free around the clock |
| Multi-night stays | Laundry and self-service luggage storage available | Shared facilities need time planning; check the cleaning arrangement first |
| Nearby | Tokyo Metropolitan Government Building and park direction suit a walk | JR and the east-exit shopping area still involve a walk |
My choice: choosing the right twin room matters more than the building name
Shinjuku Washington ANNEX suits people who value the airport bus, accept a walk from Shinjuku Station, and want a choice of different twin-room spaces. Its value lies in transport functions and room-type combinations, and cannot be judged by the two characters “new building” alone.
I would first show friends travelling as a pair with large suitcases the 25 m² standard twin; for a solo short stay, compare single and double rooms; for three travelling together, put bed positions and luggage routes first. Whether breakfast is included, and which building to eat in, can be decided to fit the day’s pace, so the hotel truly serves your itinerary.
Fact-check date: 2026-10-25