Dining at the hotel: canteenM and Bubble Bath Back Bay essentials
Yes — citizenM Boston Back Bay has two on-site dining venues: canteenM, a 24/7 restaurant and bar serving international dishes and a paid hot-and-cold breakfast buffet, and Bubble Bath Back Bay, a 21+ rooftop champagne/wine bar on the 15th floor (reservations recommended). Breakfast is not included in room rates and is sold separately at canteenM.
In this guide
At-a-glance: canteenM and Bubble Bath Back Bay
canteenM is the hotel's all-day restaurant and bar, open 24 hours and serving coffee, salads, sandwiches, warm dishes and evening cocktails. A hot-and-cold breakfast buffet with unlimited barista coffee is available for a surcharge.
Bubble Bath Back Bay is the rooftop champagne and wine bar on the 15th floor, offering craft cocktails, curated bites and an outdoor patio with city/river views. It is a 21+ venue and follows a smart-casual dress code.
- canteenM: open 24/7; casual dress; breakfast served for a fee
- Bubble Bath Back Bay: 21+; Mon–Thu & Sun 4:00 PM–11:00 PM; Fri–Sat 4:00 PM–1:00 AM
- Reservations recommended for Bubble Bath Back Bay; groups over eight should call ahead
| Venue | Primary offering | Age policy |
|---|---|---|
| canteenM | 24/7 international restaurant, breakfast buffet, coffee, drinks | All ages welcome |
| Bubble Bath Back Bay | Champagne/wine bar, cocktails, curated bites, rooftop patio | 21+ only |
canteenM — what to expect
canteenM operates as the hotel's 24/7 bar-restaurant with barista coffee by day, a full menu of salads, vitrine sandwiches and warm dishes through lunch and dinner, and beers and cocktails later in the evening.
The breakfast buffet is sold separately (not included in room rates). According to the hotel's published details, the hot-and-cold buffet runs from 6:00 AM to 11:00 AM on Monday–Friday and Sunday; Saturday breakfast is not listed as served in the same hours.
- Breakfast buffet hours: Mon–Fri & Sun, 6:00 AM–11:00 AM
- Breakfast purchase includes unlimited barista-made coffee
- canteenM maintains a casual dress code and 24/7 service for other meals and snacks
| Item | Detail |
|---|---|
| Breakfast price | Sold separately; hotel sources list around $20–$22 per adult |
| General hours | Open 24 hours daily |
| Dress code | Casual |
Bubble Bath Back Bay — rooftop bar essentials
Bubble Bath Back Bay sits on the hotel's 15th floor and focuses on champagne, wine, craft cocktails and a small selection of shareable bites including caviar. It includes an outdoor patio with views toward the Charles River.
The venue is restricted to guests 21 and older; a valid physical photo ID is required on arrival. Reservations are recommended, and the operator applies a 15-minute grace period before a no-show fee may be charged.
- Hours: Mon–Thu & Sun 4:00 PM–11:00 PM; Fri–Sat 4:00 PM–1:00 AM
- Kitchen hours: Sun–Thu 4:00 PM–10:00 PM; Fri–Sat 4:00 PM–11:00 PM (per venue info)
- Reservations: recommended; groups larger than eight should call to book
| Service | Notes |
|---|---|
| Age policy | 21+; valid physical photo ID required |
| Reservation policy | Reservations recommended; 15-minute grace period before potential no-show fee |
| Location | 15th floor rooftop of citizenM Boston Back Bay |
When to go and practical tips
For a quiet breakfast, visit canteenM earlier in the 6:00–8:30 AM window on weekdays. Evening bar service at canteenM and Bubble Bath sees peak demand after 5:00 PM, especially on weekends.
Bubble Bath can be busier on Friday and Saturday nights (it stays open later those nights), so book early if you want a rooftop table. If you need space for work or laptop use, canteenM's daytime seating is suitable for casual coworking.
- Weekday mornings: quieter for breakfast at canteenM
- Weekday evenings: Bubble Bath open from 4:00 PM — good for earlier cocktails
- Weekend nights: expect later closing times and higher demand at Bubble Bath
| Best time | Why |
|---|---|
| Early weekday morning | Quieter breakfast, easier seating |
| Early evening (4:00–6:00 PM) | Rooftop views before peak crowd |
| Late Friday–Saturday | Extended hours but busier |
Accessibility, age rules and reservations
canteenM is open to guests of all ages. Bubble Bath Back Bay enforces a 21+ policy and requires valid physical photo ID for entry. The hotel overall is wheelchair-accessible and the property advertises accessible facilities.
Reservations are not generally required at canteenM but are recommended for Bubble Bath Back Bay. For group visits to Bubble Bath (more than eight people), call the venue directly to arrange seating.
- canteenM: all ages welcome
- Bubble Bath Back Bay: 21+ with ID; reservations recommended
- Groups over eight: call Bubble Bath to book rather than reserve online
| Venue | Reservation advice |
|---|---|
| canteenM | Walk-in friendly; no reservation usually required |
| Bubble Bath Back Bay | Reserve in advance; phone booking for large groups |
Where the dining spots sit in the hotel
canteenM is on the hotel's main public level and functions as both the lobby café/restaurant and evening bar. Seating ranges from communal tables to booth-style areas suitable for groups or solo diners.
Bubble Bath Back Bay occupies the 15th floor with indoor bar seating and an outdoor rooftop patio. The rooftop is the hotel's elevated dining/drinking destination offering city views.
- canteenM: lobby-level restaurant and bar, 24/7
- Bubble Bath Back Bay: rooftop bar on 15th floor with outdoor patio
- Bubble Bath kitchen and beverage hours differ; check timings when you reserve
| Feature | Location |
|---|---|
| All-day dining and coffee | canteenM, lobby level |
| Rooftop cocktails and bites | Bubble Bath Back Bay, 15th floor |
