Claire's flat was just wonderful! We were a total of 5 adults and we stayed for 4 nights in early April 2016. We were greeted with a bottle of Bordeaux and a nice breezy apartment with a view of the city below.
The apartment is HUGE! The wooden floors are just gorgeous, big comfortable beds (2 queen sized beds, 1 twin size bed, and a set of bunk beds with twin matresses), 2 showers, a tub/shower in the master bath, 1 toilet (we had absolutely no problems), washer and a dryer, anything and everything we needed was right there.
The location of the apartment was probably the biggest selling point. You could not find a better location or a more accessible one. Within a 2 minute walk you could be at an RER Station, 2 different Métro Stations and busses everywhere.
Shopping? No problem. You could buy your tourist-y knick-knacks just steps from the flat, and then when you get hungry or need a drink... you can easily choose among the 30 or so cafés, yes THIRTY, within a short walking radius.

Notre Dame Cathedral is 6 minutes away, the Seine River is 5 mins away, Panthéon is 4 minutes, Luxembourg Gardens are 7 minutes... this flat is nothing but walkable.
I would come back and stay again. Merci Claire!