We have two small dogs and when we travel, we usually put them up in a dog resort where they are watched by professionally trained staff with a veterinarian on 24 hour call. It is pricey, but we feel that our "children" will be well cared for, so that we can relax and enjoy our vacation without worrying about them. But there have been times when we have taken the dogs with us, and then we face the challenge of finding a nice hotel that will accept dogs
Our favorite website to find hotels that accept dogs is 1ClickPetHotels.com.
There you select hotels by state and then from a list of major cities. The site displays the cost/fees to bring a pet as well as whether there is a maximum weight allowed. From the site you can click to a page about the hotel, see its rating & comments, plus there is a link to check availability and make a reservation.
1ClickPetHotels does not have not have foreign hotels listed. So we use DogFriendly.com to check for dog friendly hotels around the world,
as well as a second resource for US hotels. This site also displays the cost per dog/cat as well as any size limitations. BUT, it is also a good resource for other travel
issues related to pets including airline policies on pets, quarantine issues by country, and more. However, verify any information that is important to you because some of the information appears to be out-dated.