Very communicative, friendly and flexible host. It was no problem to drop off our luggage earlier or to leave it there a bit longer. Location is supercentral with many great restaurants for breakfast/lunch/dinner around the corner. Bed is very comfortable and the balcony is in the sun during the afternoon, perfect! Some small remarks: there is some noise disturbance from the bar beneath (but doable) and the curtains don't block the light, which is a pity after a good night of partying in Berlin.
We had an issue with some water leakage in the bathroom, but the host solved it in a very neat way. We were offered a refund or another night for free.
All in all, positive experience.