There’s high turnover and I would imagine that NYC is less seasonal than other tourist destinations relying on sun and fun; a fair amount of travel is business, a fair amount of destinations are indoors, and New York also has notable things to do during the fall and winter period, which is the slow season for most other destinations.

Vegas and Orlando have a lot of rooms but are also highly seasonal, and there are definitely off periods with lots of deals. Also unlike Vegas or Orlando New York has a lot of hotels in surrounding areas as well; hotels in New Jersey are not included in this number, but there are a bunch between EWR and Manhattan.