If you love hotels so much that you never want to check out, the new HotelHomes.com is worth a look. The site offers a directory of hotel-branded residences all over the world, showcasing an approximately $16 billion industry that’s growing at a rate of about $1 billion per year. All the big brands, from Starwood to Mandarin Oriental, are here. The NYC options include everything from the old-school Pierre (with a one-bedroom co-op listed for $2.75 million) to newcomers like Cassa (with a two-bedroom condo at $2.8485 million).