Arisia will have a 24-hour Con Suite with beverages, munchies, and the occasionally treat.
The hotel will provide 24-hour quick meals in the lobby and buffets for breakfast, lunch and dinner, the hotel will also serve food from their "bar menu" in their restaurant. You can see sample menus over here (the menu will change from day-to-day).
For other food options near the hotel, you can see our Area Dining Guides information. An Arisia shuttle bus will stop in Central Square, so you'll have easy access to many good restaurants.