Here's a list of hotels that are all within walking distance from the event and right in the heart of downtown Buffalo. As of right now, they all have at least a few rooms available.
Holiday Inn, 620 Delaware Ave, 716-886-2121
Hampton Inn, 210 Delaware Ave, 716-855-2223
Radisson Suites Downtown, 601 Main St, 716-854-5500
Hotel Lafayette, 391 Washington St # 3, 716-852-5470
Hyatt Hotels & Resorts, 2 Fountain Plz, 716-856-1234
Pillars Hotel, 125 High St, 716-845-0112