Shinjuku · Adult-Themed Stay
BaliAn Resort Shinjuku Forest
Hotel BaliAn Resort Shinjuku Forest
26 to 32 sqm themed rooms, a reservation-only artificial hot-spring open-air bath and bedrock bath; evening check-in as a rule, and breakfast and adult-use rules to confirm in advance.
Photo source:Trip.com Hotel Gallery
Check the Age and Check-In Rules First, Then Choose the Facilities You Want to Use
- As a rule the group does not accept guests under 18, and a family tag on a booking platform is not proof you can stay.
- Four room types, seven rooms, with clear differences in bathtubs, bed types and tables.
- The private-use bath is booked in 60-minute slots, and free light snacks are not a full breakfast.
The Forest shop brings canopy beds, wood and a tent-like feel into a Kabukicho stay. I would keep a night here to rest slowly, rather than treating it as an ordinary business hotel.
What really decides whether the stay goes smoothly is the adult-use rules, the evening check-in and the bathroom in your room type. Get those clear first, then look forward to the private-use bath and the snacks.
Tell the Forest Shop Apart, Then Walk from Higashi-Shinjuku into Kabukicho
BaliAn Resort Shinjuku Forest is at Kabukicho 2-20-18, different from the other nearby BaliAn branches. The official listing gives 4 minutes on foot from Higashi-Shinjuku Station Exit A1, 7 minutes from Shinjuku-Sanchome Station Exit E1 and 9 minutes from the JR Shinjuku Station east exit. When booking, calling a taxi or finding the entrance, I would use both “新宿フォレスト店” and the full address, so I do not walk to another branch in the same neighbourhood.
This is a good base for a Kabukicho dinner and evening plans nearby, but it is not right at a station exit. With luggage, allow walking time; the exits above are the regular exits, and elevator exits and a fully step-free route have not been confirmed, so ask the hotel first. A wheelchair-accessible sign inside the building does not mean every room type and bath route can be used without checking.
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
Only Seven Rooms, and Beds and Bathrooms Differ a Lot Across Four Room Types
The official listing gives the Forest shop four room types and seven rooms, characterised by canopy tents, wood finishes and an indoor camping feel. I would treat it as a themed stay where adult friends or a couple stay in the room to talk and eat, not just a place to find an ordinary business bed. The group FAQ states that, as a rule, guests under 18 are not accepted, so even if platform reviews are tagged as family travel, that does not mean children can stay.
| Official room type | Size and bed type | Key difference |
|---|---|---|
| Royal | 32 sqm; two Queen beds | Up to 4 guests, with a dining table, bubble bath and bathroom TV |
| Grace | 27 sqm; one Queen bed | Massage chair, bubble bath and bathroom TV |
| Moderate | 28 sqm; three single beds in a bunk layout | Confirm each person’s actual bed first |
| Pretty | 26 sqm; one Queen bed | Large shower room — do not assume there is a bathtub |
These are the official room names, which may not match a booking platform’s large bed, deluxe double or economy large bed word for word. Before booking I would write down the size, number of beds and bathtub needs and ask the hotel, especially for four people sharing: seeing two beds in a photo does not mean every plan sleeps four. The Queen name is not an exact centimetre figure either; bed width follows the hotel’s reply.
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
Royal’s table makes eating in the room easier, while Grace makes the massage chair a room feature; anyone wanting a bathtub should avoid Pretty, which lists only a shower room. Some room types list a two-point unit bathroom, and one guest mentioned a wet toilet floor after showering. That is one person’s experience, but anyone who cares about wet-dry separation should confirm the layout first. The rooms look resort-like, but daily ease of use is what still matters.
The Private-Use Open-Air Bath and Bedrock Bath Require a Reservation, Not Walk-In Use
The Forest shop has a reservation-only private-use open-air bath and a bedrock bath, officially available 24 hours, 60 minutes per group per booking, reserved at the front desk; book once first, and for a second session rebook after the first is finished. They are shared facilities used in private time slots, not a private open-air bath attached to every room.
The open-air bath is officially listed as an artificial hot spring, not a natural spring or water brought from Hakone. The bedrock bath takes at most two people at a time, so even four people staying together should plan to go in turns. I would ask about available times right after check-in, then decide on dinner or in-room plans, rather than hoping at the last minute that a slot is free.
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
The rooftop also has a terrace and tent-style lounge, carrying the city-camping feel into the shared spaces. Weather, maintenance and same-day arrangements still depend on conditions on site. Common in-room equipment includes Wi-Fi, a refrigerator, an electric kettle, a Bluetooth speaker and hair-care items; the way to get the most from this hotel is to leave time to use them slowly, not just sleep a few hours late at night.
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
Photo source:Trip.com Hotel Gallery
Free Light Snacks and Breakfast Sets Must Be Understood Separately
The official services page lists a drinks bar, bread and seasonal sweets, and recent guests have repeatedly praised the free drinks, snacks and choice of amenities. These are more like small extras to enjoy during the stay, not a full formal breakfast or free room-service meals across the board. The guest drink in the photo is only that stay’s experience; items and how they are served follow what is on site.
Photo source:Trip.com Hotel Gallery
The group breakfast FAQ lists the Forest shop among branches where staying guests can choose from three Morning Sets, and the shop page also says breakfast can be ordered by room service. Confirm the actual contents, prices and serving times at the front desk; I will not present the Shinjuku main shop’s Japanese-Western breakfast buffet as if it were the Forest shop’s. The available material has no breakfast dish photo that can be confirmed, and a terrace or a drink is not used as proof of breakfast.
If you plan an evening gathering in the room and want a relaxed morning, ask the breakfast delivery time in advance; if you must leave before 10:00, confirm ordering and check-out timing the night before. 24-hour room service and free light snacks are different services, so check the menu and whether there is a charge before ordering, and the stay will feel easier.
The Most Important Rule Is the Check-In Window — Do Not Assume a Normal Hotel
The official general stay window is from 21:00 on weekdays, Sundays and some holidays, and from 23:00 on Saturdays and mid-holiday days, usually with check-out at 10:00 the next day; there is also a separate arrangement for check-in after midnight. Different platforms or plans may have different conditions, so I would follow the actual booking plan — in particular, do not assume you can enter the room at 15:00.
That is also why I would plan the Forest shop as a one-night themed stay, not as a long-stay base you return to every afternoon. For consecutive nights, ask first whether the room can be kept all day, whether you must check out during the day, how luggage is stored and how cleaning is arranged. When going out, the official rule asks you to hand your room card to the front desk, and any extra orders or extension fees may need to be settled in advance.
Ten original reviews cover late 2025 to 2026: some guests liked the large beds, free light snacks and service, while others felt it was a walk from Shinjuku Station or that the night-time neighbourhood did not suit their trip. One guest mentioned a wet-floor problem, another questioned family suitability. I would decide by the official adult-use rules, not by a platform AI summary’s reasoning about family safety.
Dinner Nearby, Then a City Walk the Next Day
I would plan this night as dinner in Shinjuku first, then the hotel’s private-use bath and lounge, then back to the room to talk. Because general check-in is late, if you arrive in Tokyo in the afternoon, arrange another activity first and confirm luggage storage with the hotel — that beats standing at the door waiting for the room.
The next day you can head to Shinjuku-Sanchome for brunch or shopping, and plan a Shinjuku Gyoen-direction outing in the daytime. There are many branches of the same group nearby, but facilities and entitlements are not necessarily shared; if you want to use another branch’s facilities, ask first whether they apply and whether a reservation is needed — do not treat another branch’s description as your own booking entitlement.
Pros and Trade-Offs: An Adult-Themed Stay, With the Conditions Up Front
| Aspect | Pros | Trade-offs to accept |
|---|---|---|
| Atmosphere | Canopy and camping style, with character for in-room gatherings | Adult-use rules — not a family hotel for children |
| Room types | 26 to 32 sqm, with double-Queen and bunk options | Bathtubs, tables and massage chairs vary by room type |
| Baths | Private-use open-air bath and bedrock bath available | 60 minutes per reservation; the open-air bath is an artificial hot spring |
| Food and drink | Free light snacks and drinks, plus room-service ordering | Not every breakfast or delivered meal is free |
| Timing | Suits a one-night rest starting after dinner | Generally from 21:00 or 23:00; check your plan |
| Location | Near Higashi-Shinjuku, convenient for Kabukicho outings | JR Shinjuku still requires a walk; the night-time atmosphere suits some more than others |
The Forest Shop Is More Appealing If You Are Willing to Spend a Night at the Hotel
I would recommend it to people who understand the adult-use rules and want a one-night camping-style stay with a partner or adult friends. Choose the bed type and bathroom first, then confirm the check-in window and the private-use reservation, and treat the free light snacks as a bonus rather than a guarantee covering all food and drink. When all those conditions fit, the Forest shop’s seven-room scale and themed spaces can become a night of a different pace within a Tokyo trip.
Fact-check date: 2026-10-25