Nikos Appartment is very well located and it has a beautiful view at the sea.
Agia galini is a living place there is a lot different restaurants with local musicians. Also around agia galini if you like to take a walk its really recommended.
We went at the end of october so out of the main season there are less tourists. I can imagine that in the main season it would be a little to crowed for my opinion.
Nikos and his wife are lovely. If you need anything they will be there and help you. He also showed us alot of places to go and recommended some local restaurants to go.