Lydia was amazing and was always available, either in person or through direct messages. She greeted us when we arrived and showed us around. I don't think we had to wait for more than 15 mins for all message we sent her. She even helped us arrange for a shuttle to take us back to port when we left and the shuttle she arranged with was equally as professional and courteous which unfortunately wasn't the case for us when we arrived and arrived a shuttle ourselves.
Lydia's home is a short walk away from one of the island's major towns, Fira. It was really nice to be so close but not be in the hub of all the tourism. The place is also super close to a 24 hour bakery which is really well known and delicious, it allowed us to start our day really early and end it pretty late without worrying about where to eat.
A definitely return for me next time I'm on Santorini.