I highly recommend this apartment! We stayed here for nearly two weeks on vacation and it was great. The apartment is in a nice, central part of town (very easy to take the bus to get around and walkable to many great restaurants and sites) and we loved the neighborhood (great coffee, park, bars and restaurants all within the block). The apartment is a good size for two and is beautifully sunny. Guillaume was incredibly helpful and responsive, providing us with helpful tips and even changing the sheets halfway through our stay.
The only potential negative is that it is the top floor and there are quite a few flights of stairs - we had only carry on luggage so it was fine- something to keep in mind.