Boutique Sauna ARCH | Hotel in Shinjuku, Tokyo

Shinjuku mornings, soft light, a terrace for quiet pauses.
Boutique Sauna ARCH is a Hotel in Shinjuku, Tokyo, set within an easy walk of Kagurazaka Wakamiya Hachiman Shrine, Kosho-ji Temple, and other local points of interest including Akagi Shrine and Enpuku-ji Temple. It places you in a part of the city where temple paths, neighborhood streets, and museum stops sit close together, with Tokyo Haneda Airport also within practical reach for your arrival or departure. The setting feels connected to daily Tokyo rather than far removed from it, which makes it a natural base for time spent moving between nearby sights and the city beyond.
Inside, guest rooms are air-conditioned and include a private bathroom and a fridge, with city views available from the property. A terrace adds another place to pause between plans, while free WiFi helps you stay connected throughout your stay. The room setup keeps the stay straightforward and comfortable, with the essentials in place for settling in and getting ready to head back out.
Shared spaces lean into a slower pace after a day on the move. You can unwind in the sauna or spa center, then step out to the bar for a drink without leaving the building. That mix of wellness facilities, social space, and guest services gives Boutique Sauna ARCH an easy rhythm, especially when you want to keep the evening close to home.
In Shinjuku, the stay works well for walking to nearby temples and shrine grounds, then returning to a quieter base with practical comforts close at hand. With security features, cashless payment availability, and a location that keeps you near some of Tokyo’s most recognizable neighborhood landmarks, it leaves a clear impression of a city stay that feels composed, convenient, and distinctly local.
Arrival notice in advance, air conditioning, Kagurazaka Wakamiya Hachiman Shrine 5-minute walk

- Arrival
- Minimum check-in age is 18, advance arrival notice required
- Design
- 5-star hotel, air-conditioned rooms, city views
- Bath products
- Private bathroom, sauna and spa center
- Tech
- Free Wifi and Internet access available
Air-conditioned rooms with fridge, terrace, and private bathrooms.
Sauna, spa, and terrace views at Boutique Sauna ARCH
Boutique Sauna ARCH Reviews
A bit unnecessary just go to a sauna and get a nice room somewhere.
Good to know · before you book.
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Frequently asked questions
Yes. Free WiFi is available throughout the property.
Yes. You can use the sauna and the spa center during your stay.
Yes. Boutique Sauna ARCH has a bar.
No. Pets are not allowed.
18. The minimum age for check-in is 18.
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