Staying at Wolfgang's place is something I absolutely recommend. The apartment is really neat, comfortable and well organized. All kitchen devices were perfectly working, it really felt like home as everything was so well prepared to receive people :)
The studio and bathroom had quite a lot of space (something that can sometimes be hard to find in Paris), and location it great, just beside Les Gobelins metro station. Really ease to reach all tourist places, being in a calm and not so touristy neighborhood. Annelore was really welcoming and reachable in case of any need :)