There were 9 of us, maybe the house is more comfortable for 6/7 people (taking into consideration the space and there is just one bathroom), but we managed perfectly.
I would highlight location and communication with Chris.
Location: You have a few supermarkets nearby (one just downstairs and a bigger one 4 minutes walking). Party area is just 1 min walking and it's not very noisy. The beach is 5 min walking. We rented a car and we did not have many problems to find parking lots (without charging) There is also a public parking where you need to pay 4 euros for whole day.
Communication: Chris was very helpful and responsive at any moment. He recommended places to go and was very flexible with our times.
I'd highly recommend to stay here.