Mathias was a very welcoming person.
He responded quickly, whenever I had a question, and gave hints like "tomorrow the shops will be closed b/c of a national holiday." He was caring without being intrusive.
The apartment itself was very fine, very clean and quite big for one person.
The shower is in the kitchen, so depending on the group you'll have to arrange for that.
And one minus point: It was a bit tricky to get the warm water running. So plan some time to learn to manage that.
But I would take that place probably anytime again.