The apartment is amazing, the views of the Caldera at all times are just out of this world. The apartment is upscaled and very comfortable, with all amenities (except for cooking appliances, but most likely you will not cook at any point during your stay anyway). Imerovigi is, in my opinion, the best place to stay in the Island, quiet, walking distance to Firosterani and Thira and midway to Oia.
Theodoris was very responsive and provided lots of information.