My wife and I had a great time at Mono's apartment.
Ray was there to meet us when we arrived from the airport, all as arranged, and he showed us through the apartment, explaining everything.
The apartment has everything you need, even a safe, it's spacious and has great wifi internet. There is also a lift in the building and it is a very secure building.
The apartment is about 50 metres from a good Boulangerie and a small supermarket, but also very close to the Louvre, many shops, restaurants and the underground railway (easy to use).
Mono and Ray are great hosts, its a great location and we will be back next time we are in Paris.