Recommend to contact the host prior to booking.
We had a good month-long stay here (in August).
We enjoyed our stay. The main bedroom is mostly quiet and the mattress comfortable. Good shower pressure. Kitchen has pretty much all the essentials that are needed. Communication with Guillaume was great. Very prompt responses. Thankfully we were allowed to check in very late (3am) with a late check in fee.
Bear in mind that there is no elevator in the building (4th floor - smallish staircase). Also, the small balconies aren't "livable". The one in the back is for hanging clothes to dry (very handy).
I recommend to contact the host prior to booking and inquire about the current situation in the building. During our stay we had a very uncomfortable situation develop inside the building on the 1st floor. As a consequence we had several nuisances when leaving and entering the building, though everything was ok in the end. Guillaume was partly accommodating and always very responsive. He can't really do much about it. Had I known about this situation prior to arrival, I likely would've looked for another place. We were informed after arrival, as this situation apparently occurred a few days before our arrival.
Also, do some research on the neighbourhood prior to booking, as it may not be suitable for everyone. We enjoyed the fact that it's very well connected and central.