Etienne is a very pleasant host. You will receive a warm and friendly welcome, a thorough guide to all the functions in the room/space, and local tips if you like. He is also offering 2 bikes for renting, which is a perfect way to get around in Berlin.
The space is not so big, but we felt like we had everything we needed during our 3 night stay, and everything was fresh, clean, tidy and cozy. Also, climbing the stairs to the loft was a good exercise each day ;)