My experience at Rhapsody apartments was really really good.
What makes this structure a wonderful choice in my opinion is that it is far from the crowd of the main cities (I've enjoyed a lot the quiety and peace of the place) but at the same time it's also near to the main attractions. You can walk to Fira in 20 minutes and the caldera view is on the other side of the street.
They clean every day the apartment and change the towels as well, like in a hotel, at a very low price for the service given!!
George is very helpful and managed to pick us up from the airport and arranged a mini-bus for the port when we left.
I'm in love with Santorini and Rhapsody apartments!