You´ll join into a flat which has 4 rooms and other guests. The flat has one toilet and one bathroom! The price is in relation to this situation and it might ask you for patience in the morning. Calm and sweet room with view on the terrace on a airbed
You´ll join the documenta by tram, without change trains, just 5 stations and you´ll be a "parthenon of the books".
There is a keyless access to the building, to the flat and to your room! So you can come in the middle of the night, you´ll always have access because you don´t need a key!
I will be around for questions and a little chat here and there if you like.
My only wish to you is that you are not too noisy in the staircase late in the night.