Very clean, spacey, more than PERFECT location (I cannot stress this enough). Only few steps away from Vendome/Madeleine/Concord. Even though the street was lively, it was surprisingly quiet behind the huge wooden door (gate?) where the flat is located.
The only problem I had, however, is that wifi did not work for the first 3 days. Turned out the network company was having some issues with the setup outside of the flat. He took care of the issue as quickly as he can, and offered me discount in the end, which I appreciated.
I will definitely stay at his place again. I was staying solo this time, but if you can split it's definitely a steal!