I stayed at Thorsten's apartment for one week and I had a great stay. Although I did not get to meet Thorsten, he was very easy to communicate with and to arrange check-in/check-out. The apartment is in a central location on a lively pedestrian street. It is close to a major metro/train station and many restaurants, cafés, bakeries, stores...etc. It is plenty of space for one or two people and has everything you need. it is on the fifth floor, so be prepared to carry your luggage up there, but I was alone with two suitcases and I had no problems. I highly recommend it and I would definitely stay here again if I come back to Paris.