At W Hotels, P.A.W. stands for Pets Are Welcome and they drive that point home in every last detail. Your furry friend will get a toy, treat, a W Hotel tag, clean-up bags, and a welcome letter (describing the many concierge-offered dog services) just at check-in. But the real pampering comes with special services like a puppy-safe birthday cake to celebrate his or her special day, dog food at the ready, and a Bow-Ow Box (pup first aid). (We hear the W San Francisco will even serve Fido a non-alcoholic Bowser Beer before bed.) The hotel charges $25 on top of your room rate, and a non-refundable $100 cleaning fee.