I spent one week in this house with my girlfriend.
The house is authentic, in a very nice place of the Chora with an amazing view and It was very well equipped.
The two terraces are very beautiful, especially the little one next to the kitchen because is protected from the wind.
The host of the hosting company was great: she was very kind, welcoming and gave us many tips about the island. She also gave us as present some fresh fruits and a little bottle of ouzo.
I have to say that "Authentic" means also to deal with not high standards of some furniture: the bed is old and not very comfortable and the bathrooms are very simple, maybe too much. For these reason I think that the house is a bit overpriced, compared to Greek prices.