This was a lovely clean apartment. Looked recently updated. It's small but was exactly what we needed and was in simply the greatest part of Paris for us. We walked and walked. Notre Dame is less than 10mins. The food options are endless. The metro is about 2 mins.
We didn't meet Marc but he was prompt and clear in his communication. We were greeted by his neighbour who didn't really speak English but we managed to communicate and she settled us in.
Only one point to note: it is up a bunch of stairs. Was hard work with my luggage but we really didn't care and would stay here again and recommend it to anyone. Get in quick I think it's underpriced.