Where to start! First, Catherine's home is beautiful, an original renaissance flat with 15 ft ceilings and old world decor. The shower is modern and awesome and located in the bedroom along with a sink. Only drawback is that the toilet is outside the bedroom but was not a problem giving the fact you are staying in an old renaissance flat built long ago which makes you feel like you are apart of old world Paris.
The flat is located in the Opera District and is close to public transportation however, we chose to walk everywhere we went. It is a very enjoyable walk to any part the city. I would highly suggest eating at Pompei if you like Italian and a lot of great bars near the Hard Rock Cafe.
Before you arrive be sure to read Catherine's House Manual. It is in French so translate it so you have the code to the door on the street. The flat is located on the second floor.
I would definitely stay here again and highly recommend Catherine's place to anyone traveling to Paris.