The Westin hotel operates Sauciety Restaurant, Starbucks (behind the escalator to the Mezzanine level), and Birch Bar (in the lobby).
(updated 12/21/2021 - Times are subject to change)
Sauciety
Open for breakfast and lunch: 6:30am - 2pm
Birch Bar
Open for dinner and drinks: 4pm - 12pm
Birch Bar's closing times are at manager's discretion, based on business volume.
Starbucks
Depending upon staffing, the Starbucks may be open 24 hours during Arisia. They may close briefly to do cash register close outs during the early hours of the morning.
Room Service
Available 4pm - 11pm
Also inside the hotel are MJ O'Connor's and City Bar. These restaurants are not owned by the hotel, but you can charge your bill to your hotel room. During busy times at Arisia, City Bar may switch to be overflow space for MJ O'Connor's.
There is also a night club at the hotel called Laugh Boston.