I don't recommend this place, but I'll start with the good. The host was easily accessible and always responsive. There was a Keurig machine with good Kcups, microwave, good internet, and a smart tv with decent service.
With that being said, this is not adequate accommodation for a winter in Denver. The unit was poorly insulated and it was about as cold as being outside. Even when we asked to turn the heater on, it would only stay on for a few minutes and didn't really make a difference. The floors were always freezing. There was a big gap from the bottom of the door to the floor which always let in cold air. Again, this is winter in Denver, and we were freezing.
I had to borrow an extra comforter from my family. They provided extra blankets, but they were poor quality and everything smelled bad, like when you leave the laundry in the washing machine too long before putting it in the dryer.
The bed didn't feel clean and I was so uncomfortable sleeping on it. It was also really squeaky and unstable. If someone moved, the other person could feel it on the other side.
There was no sound insulation and you could hear everything going on upstairs. Although it's a quiet neighborhood, being directly next to a cemetery.
I had to buy cleaning supplies just so I could feel comfortable using the bathroom. I bought Lysol wipes and it honestly looked like the bathroom had not been cleaned in a long time. I also bought bleach for the shower because it was also dirty and also looked like it hadn't been cleaned in a while. Also the shower was too small and hard to move around.
Not sure what was going on with the bathroom plumbing, but it just constantly smelled like sewage. Any time anyone in the house used any water, a very loud machine turned on in the bathroom utility room, so if you're late to wake up, you get startled by what sounds like a washing machine dealing with the sewage.
The bathroom lights regularly flickered and went out for a while but then would come back on later. Probably due to the scary electrical situation, where the entire unit seemed to be wired through a single breaker in the bathroom. A space heater would have really helped but I don't think the electrical system could have handled it.
So although the host was very accomodating, the unit itself was terrible. I would recommend a deep cleaning of the place, an update to the electrical, and better insulation.