Our experience at Alain's flat was both very good and very bad. It's a nice flat and the location is fabulous. However, on the Friday night we arrived, loud music played - both from the restaurant downstairs and the flat upstairs - until 4.45am. We got little sleep, and it ruined our stay in Paris.
The beds are comfortable, the TV works great, there were lots of towels, free croissants and soft drinks were supplied and the general condition of the flat is very good. The bathroom is not as nice as pictured, but everything works. However, we wanted to sleep and could not because of the loud noise. So, be warned that you may have noise problems if you choose to stay at this flat.