Fantastic stay. The apartment is very well located with transports and all convenience nearby. The flat itself is a bit old but well equipped, including thermostat for heat regulation (I visited during winter). Windows are single pane but the area is silent at night. All basic supplies were made available (linen, towels, cooking utensils and basics), internet worked well.
What really elevated the stay was the service, though. Not only did Frédéric give me an overview of the basics and a handy plan of the area, he went above and beyond to accommodate all needs I had - including helping on the weekend as I somehow managed to get the key stuck. Absolutely recommended if within your budget (it is on the expensive end, but justifies it).