This is a cozy, comfortable little apartment in a good location. Quiet at night, but with grocery stores and nice restaurants close by (we loved Yido, Markt58, and breakfasts at Cafe SAADI). Two blocks away is the D tram line that takes you all over the central city.
Georg was very friendly and helpful, answering texts quickly and coming to help when a fuse blew out. He even left us some sweets and drinks on our arrival.
The kitchen was well stocked, and there was lots of space for clothes and luggage. The wifi worked well. The washing machine was very handy, and clothes hung on the drying rack dried overnight. (If you need them faster, there's a very modern laundromat one block away.) The only negative thing about the apartment is that the bed is against a wall on three sides, so if two people are sharing it, the person against the walls has to crawl over the other person to get out. Not good if you are claustrophobic or get up a lot in the night.