Konstantinos was a great host and gave good advice on where to visit. The bus stop was right outside the building which made it easy to get around. There is also a tour company opposite the building which offered the perfect package ($30euro) to the Volcano, Hot Springs and Oia for the sunset. The black beach is just walking distance also. What was also helpful was that there is a 24hr bakery 5mins walk down the road as well as a grocery that closes at 11pm right next to that bakery. The key spots to visit in Santorini are the Volcanic island, the Hot Springs, Fira, Oia, The Black Beach and the Red Beach. Konstantinos place offers a central point to access all very cheaply.