The luxury Onyx Hotel offers a priceless location in central downtown Boston In historic downtown Boston; the Onyx Hotel is a gem of a boutique hotel; offering exceptional accommodations a stone's throw from TD Banknorth Garden Fleet Center; Faneuil Hall and North Station. Also close by; you'll find the new and old City Halls; state buildings and courthouses; Bunker Hill and the Tip O'Neill Building. Stay at the luxury Onyx Hotel; and surround yourself with Boston's business and entertainment happenings. Enter the Onyx Hotel and stay in luxury in a central downtown neighborhood. You'll treasure the rich details; luxurious materials and artful design in all of the 112 guestrooms at the Onyx Hotel. The Onyx; a luxury hotel; takes its name from the rare and sought-after stone that symbolizes benevolence and goodwill and is thought to enhance generosity; responsiveness and receptivity.