We did a family bedroom once for five - three kids and two adults -- some things best not repeated. You have two full size single beds, and two midget beds. If your kids are relatively small, it works fine, but a major downside in my mind is that although the room goes totally across the car, you have two small square windows to look out of. Pretty confining feeling, and the door is solid, so you can't look back into the hall way.
What we did afterwards was to get two economy bedrooms and request that they are across from one another. During the day, room 1 becomes rodent land, and they can play, read, watch movies, and maul each other. Across the hall, us old folk can read and relax, only pausing periodically to pry fingers from necks :lol: At night, the wife and I separate, and we both take lower beds while the kids take the upper bunks. This works really well if you get lower level rooms since there isn't much through traffic, you're right by your luggage, and the bathrooms are right down the hall. Admittedly, this is a little more expensive than the Family bedroom, but it'll make for a more restful trip in the end.
Now our daughter is in college, and our son is a high school junior. But we're still old folk!