I can only reiterate what all the previous reviews have said:
Viky's place does indeed have one of the best views in Sikinos. The two terraces (both of them large, and lovely, with tables and seating for a fair-sized dinner party, capture morning sun/afternoon sun/shade according to time of day and preference. The kitchen is wonderfully well-equipped, even down to olive oil and pasta and sugar and honey and so on and on. The beds were very comfortable. The position, in the port, gives easy access to everything Sikinos has to offer, including a lovely sandy beach, several places to eat, drink coffee, and a small supermarket for supplies. For those who enjoy hiking, Sikinos has some excellent paths, for those who just want to sit around, it's very, very easy to do nothing at all. An excellent place to spend a week or two relaxing, swimming, walking etc. Finally, although we didn't get to meet Viky, she was a great host, rapid with her replies to any messages, and helpful whenever we had questions. Highly recommended.