We absolutely loved Berlin and Tomos was incredibly helpful and welcoming in adding to that experience. The apartment was spacious and beautiful, even more so in person. Tomos gave us loads of local recommendations on bars, clubs and food places (Ungeheuer was perhaps the best one of these!) and was very useful in telling us how to navigate our way from the airport and around Berlin. We found Berlin to be incredibly cheap and Tomos' recommendations and help only added to giving us the best for our poor student wallets! Although he wasn't there upon arrival, and the sheets were a bit damp he was incredibly considerate and understanding, always replying promptly and extensively to our messages and queries, telling us how to work the washing machine and where the local launderette was, even refunding us the first day!
We would highly recommend Tomos and Mirko, and would definitely stay with them again; we have no doubts that the problem with the sheets was minor and completely unusual, and we hope that it doesn't effect your decisions in choosing to stay with him.