How old are your kids? Mine go to sleep at 7:30, and sleep for 12 hours. It's pretty well impossible to do that when you're all in the same room. There's also no room for play in a hotel room without bouncing off the walls. It's fine sure, but being able to rent something different is a much more enjoyable experience for my family. Especially if we were going to meet someone somewhere and can do a shared accommodation.