Roger is a super kind host! He was very cooperative with check-in and check-out times. Also the apartment is located in a cool district and near to many restaurants and bars. The metro is reachable in around 5 minutes.
The only thing we can complain is that there is a window in the bathroom to the bedroom next to it, which was a problem when we were still sleeping but our friends turned on the lights in the bathroom.
But the best thing of the flat definitely is the rooftop terrace! And if there were some sunbeds or similiar it would be even better.