[/QUOTE] I can't imagine it would be much fun for an animal to be cooped up in a 260-400 sf room for hours on end, in unfamiliar surroundings, with lots of noise going on around them all day. However, I'm a cat person and my cats prefer to be left alone in the peace and quiet![/QUOTE]
Here is the dilemma: There are many places where people can stay on property and not have to deal with pets but there is nowhere for guests to stay who have pets with them. Pets are forced to stay in a kennel which has substandard employees and grossly misrepresents their accommodations. Many people would not be satisfied to leave their pet in a tiny wire and steel cage with 2 minutes of stepping outside the door to pee per day. If you want to see some miserable pets, go visit the standard suites at Best Friends Pet Care.
Like others have said, some people don't have family or friends to care for their pets while they are away. Dogs need several walks per day. In rural areas, you will not find people willing to travel 30 minutes to your home 3-4 times per day. Plus, some people don't want strangers (dog walkers) in their house while they aren't home and/or aren't comfortable leaving their pet for long lengths of time. When you adopt or purchase a pet, you take responsibility for that animal. The responsibility doesn't end just because you decide to go on vacation. For a dog owner, taking time out of the day to visit and walk the dog is a way of life, not an inconvenience.
I guess I just don't see what the big deal is about having a pet in a designated pet room at one resort. If people don't want to be around dogs, that's fine, don't book that building or request a different room if they place you there. Nobody is forcing you to pet them or approach them. Most dog owners are not going to barge into your room with their dog, barge into a restaurant, let their dog jump into the pool or charge you on the sidewalk. If they do, confront the person or put in a complaint like you would with any other issue.
Hotels can easily cut costs on damage and cleanup by using vinyl or laminate flooring in the designated rooms. They can require that dogs be crated when guests are not in the room. They can provide alarm clocks with white noise options for guests staying in the pet friendly area in case a dog is barking.
A dog staying in a room that isn't pet friendly would be easily discovered. It would only take one visit from housekeeping or one bark. I doubt that many owners would take that risk if there was a fine in place for breaking the rule. People with allergies would definitely want to request a non-pet-friendly room. I have severe allergies to certain common foods. Can I be guaranteed that no one ever ate or spilled these foods in the room? Can I be guaranteed that any remnants have been thoroughly cleaned so as not to cross-contaminate? No. I have to take that risk when booking a room.
I personally don't see how a dog is more bothersome than a screaming infant or a rowdy adult.

How is the room any messier or more stain covered than one which was previously occupied by a family with young children who often spill drinks and food and have accidents all over? As for the flea issue, most owners treat their dogs or use a preventative. Very few don't. If this is an issue, dogs could be checked for fleas upon check in and one dose of preventative would eliminate them before they even enter the room. IMHO saying that most dogs will bring in fleas is like saying most humans will bring lice into the room. Should hotels check for that too LOL.
I'm sure many of us have already stayed in a room that was previously occupied by a pet and never knew it. Guide dogs are allowed on property and do stay in the resorts with their owners.