This could be a really great place to stay depending on what you are looking for. It was perfect for me (I.e. solo traveler for 3-4 days).
The posting is accurate. The studio is a little small but very comfortable. The bed mattress was unexpectedly very comfortable: one can surely have a great sleep. I was glad to see that the place was very clean (I am typically a picky with that, and I was very pleased with what I saw). The “walls” can be a bit thin (it’s easy to hear people in the staircase and neighbors from above), but it really didn’t disturb me in any way. The building is fairly calm / quiete.
The neighborhood is good. This is very central.
I would recommend this to anyone who comes to visit Paris for a few days.