This place can be dodgy. It is definitely not an "experience" as it sounds like. Maybe for some people, but not for us. In the middle of June, it was like a hot gas chamber for us without any ventillation, fans, air circulation, and with a minimal light with which we could not even pack our bags or read or sit in the tent and enjoy our evening snack. Severine (the host) is a wonderful, and very kind and nice person. Very hospitable. She is very responsive, and communicates wonderfully. We have no complaints about the host or her attitude towards guests. It's just that the accommodation is very inconvenient. Hot as an oven, dim and depressing, smelly, and the bathroom very inconvenient without any water, and having to use a toilet which is nothing more than a pit covered in layers of excretia covered by sand. Just not our idea of a vacation spot or accommodation.
For Euro 20 or 30 a night, it may be OK. But for Euro 75 that we had to pay, it was absolutely not right. Even a simple dry log from the garden (for the outdoors fireplace so we could roast some smores) was priced, and we were asked to pay Euro 2 if we wanted to "buy" it. Switzerland has turned into a land of scarcity it seems!
Perhaps it was our mistake in booking this room, since we are not bohemian enough. "Mongolian" "Yurt" in a "garden" in "Geneva".... all sounds very cool on paper, and that's why we booked. Reality was very different. It may work for others though since Severine is a nice person.