We have a bunkhouse because we have 3 kids and it's been really great. If you don't mind making up the beds each evening and picking them up in the morning you can do other floor plans. But imagine every night, and every morning. When you and/or your significant other start moving in the morning and want some coffee, are you going to have to roust the youngsters to sit down? If you have to spend time inside, maybe its raining, how much "space" do you want? While its great to huddle around the dining table playing a game, it's also great for us to send the kids in the back so the adults can have a few moments of peace. We also have an outside kitchen which comes with many bunkhouses and we love that and use it all the time. I'm not sure how I'll function without it in the future if I ever downsize. I think in the future we will downsize when our kids are older and then I'll want a different configuration (maybe that window in the back!), but we really like our bunkhouse. The kids love it. They have a TV back there and sometimes we let them take a game system (that's off during the day, unless we're all inside).
