We (two 66 year-olds) stayed in this tiny house for 4 days in October and loved it.
I am obese and worried about a tiny house (much as I wanted to stay in one). No problem here. This house is like a big hotel room, with a kitchen-living area, a well appointed bathroom, and a small bedroom with a queen size bed. Because the ceilings are high in the living areas, and because there are plenty of windows, we didn't feel cramped. The living room furniture is made for adults--very roomy. There is also a 4-seat table. The kitchen is well appointed with a 4-burner stove, a full-size refrigerator, a toaster, a microwave, some counter space, and a good supply of dishes, utensils, and pots/pans. The bathroom is small, but the sink, shower, and toilet are adult size and it has a lot of storage space. The bedroom is the only room with low ceilings; it has a queen bed, two nightstands, a wall light on either side of the bed, and a pretty big closet. It is a squeeze to get in either side of the bed, but this is a tiny house...
There are a couple of small issues, but not big deals:
1. while the location, just outside of Moab, is perfect, the site is not attractive. Funstays is located in an area with a lot of metal, abandoned cars, and RV parks. We had the hills on either side of us, but we also had RV parks, a noisy highway, and other tiny houses/RVs right next to us. That said, our site was just as attractive as motels outside of town and certainly less trafficked than those in town. The area felt safe. Just be prepared that you will not be in a park-like setting.
2. The air conditioning was noisy. My husband could not sleep with the bedroom AC on, so we slept in a stuffy room. We needed air even in October because the place was stuffy.
3. The bedroom looks onto a noisy highway and the traffic (and truck lights) are a 24-hour thing. So, no AC and windows closed at night.
4. The loft is difficult for overweight 66-yr olds: the stairs are steep, no handrails, you have to crouch on a mattress on the floor, and, of course, the bathroom is down the steep stairs. We didn't need it and most people understand that lofts are for the fit, so no big deal.
We would stay again for the location (not the site itself), the appointments, the comfort, and the helpful staff. It is a cool, unique place. One can see how carefully it was put together.