I stayed at Sandra's for a week and the experience overall was good.
Sandra and I had a misunderstanding concerning the number of guest staying at the house, 2 kids were supposed to stay for one extra night - sleeping on a sofa and she wanted to charge an extra 40 euros. At the end we did not pay because the kids left and we never exceeded the number of guest in the house.
Also, there are some taxes there you will be asked to pay and are not mention anywhere, it is not much but I think it should be stated somewhere.
The wifi was not working bur Sandra has been super fast in trying to get this sorted so for us was not a problem.
The house is overall clean, very humid and in an amazing location right in the heart of Ericeira.
Parking was always easy to find max 5 minutes walking distance away.
Sandra is always ready to help you and allowed us for an early check in.
The neighbours have a small kid so you will need to pay extra attention when you are at home during the evenings. We had just one dinner at home but they came upstair (before we even begun to eat) as just by moving the chairs the noise was loud.
If you are quiet and want to enjoy the beauty of Ericeira I would recommend this place.
If you go for surfing there are few beaches near the house although the best spots, to me, are further down towards Ribeira d'hilash