This is an accident. Think what happens when you have a traffic accident.
1. The dog owner is responsible for the damage and injury of the victim. No less and no more. Probably all medical bills. Not sure about lose wages. Lawyer can figure out just like car insurance company. Dog owner should have some liability insurance.
2. It is up to the police and animal doctor to decide on the fate of the dog. We can't insist that dog be destroyed because the dog hurt one person. With the culture in America, the dog would probably get a lot of chances before anything is done to him.
3. In additional to the liability from the dog owner, certainly the hotel is responsible too. The coverage may be broader than the medical bills the dog owner should be responsible. The lawyer can figure it out, like the loss of enjoyment and all the fun stuff.