We were close by that cabin on Ascent. There was noise from up above from 2am onwards. It was apparently cleaning that was being done and large items being moved. There was banging every night. We complained and got some compensation towards a future cruise but I would not choose that location again.
We did a private tour with Karavas travel last week in Santorini. There were 6 in our party. We could choose the itinerary and length of trip. We paid a deposit in advance then the balance on the day. An excellent family company to deal with and always kept in touch. We would recommend them thoroughly.