The overall experience was great.
We arrive at Santorini very early (7AM) and George kindly let us check in at that time. He also picked us up from the airport (for only 20 euros and we were three) and didn't mind to let us the apartment so early. The room was accommodated for two persons at that time, but the fact that we arrive so early explained why. The room is more like a Hotel, you get to have a cleaning service each day and you can ask the reception for towels for the beach.
The location is also great, with a lot of local services near (supermarket and bakery) and only a 15 min walk from Fira.
Would recommend if you don't want to be surrounded by a lot of tourist!