My stay at Lisa's was very pleasant. It is extremely easy to find because it's ~100 meters from Notre Dame. She helped me find various things in Paris that I was looking for, and also informed me about reasonably priced restaurants, etc. When I return to Paris (eventually) I hope that she is still offering her place for staying at, as I would not hesitate returning there. It was ideal for my needs, because nearly everything that I went to Paris for was within a reasonable walking distance from her place.