It is a break from routine. Just like having sex in the car or the spa or while driving. It is exciting because it is an experience out of the ordinary. It is like watching the same movie every day over and over. Usually we don't do that because it would get boring and you know what is going to happen next. It is always good to have same 'ol but a new setting is exciting and it is easier to role play when not in your own bedroom. Plus vacation sex is better for me because when on vacation I am less stressed and for a woman the more relaxed you are the easier we reach climax. Just don't do it directly on top of the bed spread. Ewe.
A couple things. there is something different. You aren't in your usual place and you can feel like you are getting away with something. Also, you know you are alone and can do whatever you want. You can make a mess and go crazy and don't have to clean up.