The place is not very big, and it is difficult to stay there with four people and cook at the same time as two of the beds are located in the common area of the appartment. It is really a one-bedroom place that can accomodate up to four people. However, the staff was really helpful and the location is fantastic as it is only a short walk to the beach (50 meters) and the restaurants of which most of them are located on the beach front. In addition, it is a short walk to the 24 hour bakery which has plenty of delicious options and makes great coffee.
The staff was also very helpful and supported us with the booking of the cladera cruise which took us all around the caldera where we could climb the dormant volcano and swim in the hot springs. The public busses are also easy to use and take you to the main city (Fira) for 2.20 EUR per person within 20-30 minutes.
All-in-all we enjoyed our stay at Vasilios & Cynthia's place for the convenience and the friendlyness of the staff and would recommend the rental for cost consious travellers.