Kostas was a great host for a few reasons. There was a plumbing issue with the Airbnb that we had originally booked - caused by the previous guest. Kostas found us another place to stay that he managed, an upgraded penthouse at The Pinnacle Athens. It was a boutique hotel in the center of the city, close to all the must-see sites and a rooftop with 360 views. The change didn't even put a blip in our plans as everything was figured out before our plan from Santorini took off. Kostas checked in on us multiple times to make sure the relocation met our expectations. The hotel had a front desk with attendants. George and Panos there were also very personable and attentive. At the end of our stay, we received another 2-night stay at the hotel for free for the next 3 years, to make up for the inconvenience. I would highly recommend staying at The Pinnacle or booking other locations run by Kostas.