We had a great time at Antonio's place. The location is very central for seeing a lot of Paris (quick walk to the Louvre, etc). The bed is very comfortable and having an elevator is a major plus. Based off the photos, we were anxious that the apartment may be a bit too small but once we got there, we felt like it was ample for two people.
The neighborhood itself isn't the most exciting place but it was very quiet at night and a good place to come home to. We had a minor issue with Antonio's internet not working but he went above and beyond to fix it as quickly as he could (helped us get on a neighbor's WiFi and then got an air card). You really couldn't ask for more in a host/home base.