Thank you for your comments. I would like to respond to a few of them.
The address Boulevard 85 is the official address of our property and the guest house is part of the property. On the website (both in the summary and the detailed description) you could have read: The guest house is located behind our own house and looks out on an inner court yard.
You mention you find the house “etwas spartanisch”. Everybody has different ideas and opinions, I understand that. To describe our guest house in this manner, to me doesn’t seem right though. I think a prison cell or a monk’s cell in a monastery would fit the description of “spartanisch” better.
I do appreciate constructive feedback and tips for improving things, but serving me with complete new house plans, seems a little exaggerated. Furthermore, also in this case you could have read on the website, before you booked, information about the house: downstairs you will find the toilet, a little kitchen area and the living room with a sleeper couch. Upstairs it has 2 bedrooms: one with a king size bed (in this bedroom there is a sink), and one smaller bedroom with bunk beds (in this bedroom you will also find the shower). So, there is no separate bathroom.
I am very sorry to read that your experience wasn’t how you would have liked it to be. Everything you have comments about though is on things that you could have known. All the information is on the website.