Margarita’s place is wonderful. It is about a 30 minute hike (!) to Fira (Thira), but you can also take the bus there. The apartment is very clean, has a really nice vibe and is very minimalistic (but it has everything you really need). The area is very nice, there is a really nice restaurant (Roza’s) close by. The owner is incredibly friendly and the food is so fresh and delicious!
Be aware that the water in the apartment is not drinkable (there are two mini shops about 2 minutes from the place though) and that you can’t flush your toilet paper down the toilet, which may be a little inconvenient for some people.
Margarita has truly been the most wonderful host I’ve ever had. She was extremely welcoming when we arrived and she explained so much about Santorini. We could ask her any questions we had and she’d always try to help us out. She also arranged a transfer from the airport to the apartment and from the apartment to the port for us. Thank you so much! :)