We stayed with 6 people for 12 days in Leonardo´s house and were very happy with it. It´s plenty of space inside and also in the garden to hang out and enjoy your holiday.
The house is located in a little village at the sea that doesn´t feel very touristic - we stayed there in the off-season but I don´t think it get´s too crowed in the summer. You should have a car to get to the next supermarket or make trips to the beautiful region.
Leonardo was like the perfect host, very polite and always there when we had a question.
So all in all, I definetely recommend to stay there, if you like to be in an area away from the big touristic crowds.