I see I'm the first reviewer for this space, so I'll give a good detailed report :)

My stay at Wolfgang's flat was very enjoyable. The apartment is very quiet and very private (the balcony looks onto an inner courtyard with almost no windows that can see into the space)

The style of the place is very nice, the folding bed is very comfortable and not a pain at all to stow. The custom light fixtures and colorful accessories make it a very cheery little space.

This place is in the inner 13eme- almost the 5th. The Métro line 7 is nearby and is very convenient to the city center (goes to Châtelet). Cab trips home later at night were very affordable.

There is a Carrefour market nearby which was very convenient for picking up food. Other cool stuff in the neighborhood include a great recommend restaurant, a couple wine bars, a hookah spot, and a business where you can sit down and play board games with your friends (cool huh?)

I wasn't able to meet Wolfgang in person but he arranged the key pick-up and drop-off in a very convenient way.

The only annoying bit was that the space does not have an internet connection. There is a paid public wifi accessible from the property at around $25/mo. Unfortunately the connection quality was quite poor and I was only allowed to have one device connected at a time. If it were my space, I'd invest in getting a connection.

Aside from the hiccup about the internet, everything was great about my stay, and was very pleased with finding it. I highly recommend.