...at check-in, they can move you later. I very rarely stay in the room that they assign me. I always tend to be put, initially, in a room that overlooks a parking lot, a garbage bin, utility pipes, etc... It's like they try to put someone in that room and whomever doesn't complain is stuck with it. Always ask them to show you the resort map with the room location and make specific requests if you know where you want to be. Even though they sometimes can't tell you the room number, they usually will tell you the general location of the room.
And if you get in there and hate it, call back down to the front desk and ask to be moved - if they have something available, they'll almost always offer it if it's the same price as what you have. And even if they say they are full and can't move you at all, you can ask if someone's checking out tomorrow, and if they are, they will often times move your stuff while you're out and you can just check into your 'new' room the next day. They can even do this between resorts, within reason I have heard (though I have no personal experience with that last tidbit).