Everything previous guests have said about Nicholas is true. He is so kind, helpful and generous and goes above and beyond to be sure you will have a nice stay in Santorini. This Airbnb is in Perissa on the Southeast Coast of the island. The walk to the black sand beach is under ten minutes and there are lots of bars and restaurants to choose from (my favorite was Tranquilo) and plenty of lounge chairs along the beach to relax on. I liked this side of the island a bit better than Fira and Oia - though they are incredibly beautiful and you should definitely see, they are very busy and touristy. Perissa was more relaxing to me and felt a bit more local. You can easily take a bus to Fira and then on to Oia for under 5 Euros one-way. The station is a bit chaotic but there is an information center and the buses are all marked with their destinations.
The place itself is very clean and comfortable, with air conditioning and wifi. And again, Nicholas truly will do anything he can to make your stay excellent. I'm very glad I booked this place and would do so again if I were to return!