Ann's flat is a good size and in a good area in Paris, it's walkable to most central locations and there is a metro close by. Lots of shops, cafes and bars are close. The only negative is that the flat shakes whenever a train goes past.
We had problems with the check in which meant we were 5 hours late getting into the flat. Ann did give us a partial discount which was nice but it was still very frustrating. We hope she's improved her system.