The hotel gym in Onyx Boston Downtown has a Poor GymFactor. This Boston luxury hotel is located in the Italian North End district, offers in-room spa services and is eco-friendly. It features a 24-hour gym and morning coffee and tea service. The Onyx Boston Downtown provides guest rooms with iPod docking stations and flat-screen TVs. Deluxe linens and bathroom amenities are available in every room as well. TD Garden sports arena, home to the Boston Bruins, Boston Celtics and the Boston Blazers, is less than a 5-minute walk away. The Onyx Boston Downtown is steps from the North Train Station.