If I would go to Santorini again I would definitely stay again at Ersi, My wife and I had an amazing stay at Elias' family-run hotel, his mom was very nice to us, we got very early to the hotel with our clothes wet because we were previously in rainy London and she even helped us put to dry our clothes and wash my socks. They helped us showing us a map and recommending places to visit, they booked our scooter rental at a very reasonable price, on our way back Elias drove us to the bus station. If you like to wake up early is an amazing place to see the sunrise ;) highly recommendable