Before arriving the communication with Jessica was very good. She replied almost immediately to my messages and gave me/ us all the information needed for check-in.
Since Jessica couldn't be there when we arrived, her neighbour gave us the keys, showed us around and explained everything we needed to know. She spoke fluent german - so very good and easy for us ;)

The treehouse is very interesting and you should definitely be a little adventurous if you want to stay here. Behind the bed is a little curtain so the neighbours can not see into the treehouse. But they can hear ;)
The bed is very comfy and there are enough sheets when the nights are a bit colder. When it is raining, the bed stays completely dry. But the table and chairs at the other end of the treehouse are not covered. So if you want to sit and relax during rain you should go to the back deck of the main house - which is huge and has a lot of comfy seatings.

We didn't use the "nightly-#1-possibility" which is basically a bucket ;) and went to the main house instead. No problem at all.
Some things could be enhanced and we talked about it with Jessica. She told us that she will continuously work on the treehouse and make it better.
We felt very good and liked our stay there. Jessica is a really nice person and cares about her guests. We had a lot of fun during our days in Seattle and can absolutely recommend the treehouse :)