We had a very nice stay here at Adrianna's place. The location is great. There are several great walkable restaurants. It is close to the RER B at Luxembourg if traveling from CDG and close to St. Michel RER if traveling to or from ORLY, in addition to several Metro stops to connect you around the city. The location itself has several landmark attractions in walkable distances.
The apartment itself is small but cozy, very nice for a couple to visit. Comfortable couch that turns into a bed. Hot shower with good water pressure. Decent kitchen for small cooking. Good functioning heaters when visiting during cold weather. Easy to find.
Santiago was very flexible and accommodating. We had some flight delays setting us an hour later than our agreed upon meeting time but he thankfully was willing and able to meet us and show us everything we needed to know about the apartment.
All in all, would absolutely stay here again.