Only one thing: the parking situation is a bit difficult/expensive. The night is free to park in front of the house, but during the day its really expensive. I recommend booking a park slot somewhere in advance (e.g. on parclick.de we paid 40€ for two nights) to save some money.
But despite that: Super nice flat! Everything like on the pictures- new and very clean! Nicolas is very helpful and tries to make your stay as comfortable as possible! Would definitely stay here again!