Catherine's place is ideally located. Easy to get to the main tourist attractions by the metro. We mainly walked as most things were only a 30 to 45 min walk. The Picasso museum is near by and well worth a look.
If you plan to have lunch in one of the restaurants in the Eiffel or go to Moulin Rouge suggest you get these well in advance.
Also by getting your tickets online for museums etc prior to arriving in Paris will save you a lot of hassel. If you are planning any train journeys to Giverny etc they are cheaper the more advanced you purchase.
Disneyland require tickets to be printed on A4 paper, they do not accept mobile receipts.
Very close to a lot of cafe's and restaurants. Bonus was that there were a few really good vintage clothes shops near by.
Wifi works very well! A great place to stay!