Martin was excellent. Super quick responses and great communication throughout. He even sent a video walkthrough of the check in process. Meticulously clean flat. The heated floors were definitely appreciated during the winter. There were a lot of small touches that really helped, like having two sets of keys. Although I was alone, if I had been traveling with a companion, it would’ve been nice to have our own sets of keys. Also, the location is great. Minutes walking distance to Potsdamer Platz. U-Bahn station is across the street for easy connections to public transit. Definitely recommend and will stay again!