We stayed in Polos appartment for 4 nights. It's in a great location, walking distance to everything you need to see whilst in Paris. However the street is very noisy late into the night and starts again very early in the morning. There is no air conditioning or fans in the appartment; we stayed in Summer and this made it extremely hot!
Polo was very easy to communicate with and when you arrive at the appartment Xavier is the person you deal with who is also very helpful.
The bakery across the road has delicious snacks and the Gelato store below is a must try!