Our stay in Rene's appartement was perfect. The apartment is beautiful, everything is brand new and clean.
We didn't even see Rene cause we arrived late and left very early but he is confidant and let you the keys thanks to a keysafe at the door, it's quite simple and so you can arrive and leave anytime you need to.
Be cautious though, the title "14 minutes to the center" refers to the time you need by metro to get in the city center. By foot you need around 30-40min.