I've been at HR with a garden view twice. First time GREAT view of plush landscape, second time lousy view of roof. You are usually escorted to your room with a bell hop. When you get there check the view, if it is yuck, call the desk and see if you can be changed OR ask at check in if your room has a good view and that you really don't want to be looking at the roof.(perhaps they can tell by the room numbers).