You and I talked about towing Airstreams a long time ago. Did you see the camper my BF and I settled on? Haven't bought one yet, but we picked the model.
No. I have some knowledge of towable campers, owned a couple, would enjoy seeing it, or a link.
This is what we want:
here is a classified for one which has better interior pictures than the manufacturer's site.
We landed on this because I wanted something low-weight and low-profile, but the BF does not want a standard pop-up. This was the compromise. The "dormers", which are a recently developed option, became not-optional when we sat in it... he's 6' tall and without the dormers you can't put more than one person on either side of the table.
Not bad. I know them, has the advantage of being fairly wind resistant in a storm, which other pop-up trailers aren't. Kinda small, but if you've been inside and it meets your needs, great. I'm guessing doesn't need a brake controller, either.
Now here's a pop-up (tent) trailer that I owned. About 24 feet when opened, 16 when closed to the hitch. Weighed about 3500 pounds, so your vehicle had to be Class III rated, with an electric brake controller.
It had a king-size bed at one end, a queen at the other, that friends often shared. Also a slide-out dinette in the back that you can't see, that could also sleep 2. With this optional awning & screen room it was about 12 feet wide when open.
It had a full bathroom with shower, hot water heater, gas furnace, A/C, microwave, 3-way refrigerator, 3 burner gas stove, on-demand sink with pump.
I like the pop-up concept because it's low enough to see over in a rear-view mirror from most tow vehicles, relatively light, very stable when towing and resistant to cross winds (if you distribute the weight inside it correctly). What I liked about my tent version (versus your hardside) was the open screening on 3 sides when I wanted it. But it was fragile in heavy weather.
I prefer tenting, how I was raised as a little kid, what I did throughout my Army career. In fact, I got my first tent trailers when I was still in the Army, swapping between Army tents and my own tent. And I also tented off my motorcycles, including along the beaches of the Pacific Northwest. I also used to camp along the Puget Sound, and catch Dungeness Crab for dinner. YUM!!!
I love to feel the evening breezes blowing over me, to hear the nightime sounds of insects and animals, the wind in the trees That's why I don't like fully hardside trailers and motorhomes, that are like motel rooms on wheels. Why go in the woods if you're walled off?
Yours is a compromise, and may do very nicely. I like the dormers. You have to start somewhere. After your first, like mine, you'll learn more, and decide where to go next. Good luck to you!