We enjoyed our stay a lot. Carine was super friendly and always available for any questions we had. She also made our stay possible with only very short notice as it was very spontaneous.
The apartment itself was very clean and spacious. As others already said, the location is perfect to explore the city as it is possible to walk almost everywhere.
Of course, with this great location, it is not always super quiet at night, but we were able to sleep anyways.
So overall we can only recommend staying here and we think that it is very hard to find a better place to stay.