Marianas and Miguels place is amazing. I stayed there for three month and I can highly recommend anybody staying there. I lived at quite some places but I really felt at home at this apartment. If you surf, the location is perfect for the bigger winter swells, since you can walk to three spots near by. If you don't surf, its still the perfect spot to be close to everything in the city. Staying here you don't really need a car.
The apartment is equipped with everything you need and if something is missing Mariana is always there to help. I stayed there by myself and used the second room as a storage for my bike and my surfboards. The apartment was really clean when I moved in. It was easy to make myself at home there. The wood in the second floor makes the place really cozy. I never felt cold even there were some rainy and windy days during my stay. I recommend everybody to have a look outside of the bedroom window during sunset. You have a magical view then. I also loved to fall asleep and wake up to the sound of the waves.
Mariana was always there to help me and to have a quick solution. Even when I had some private problems she was really helpful and did everything to help. The communication was perfect.
Like I said before, I will recommend this apartment to anybody who will look for a place in Ericeira: perfect location, well equipped and cozy apartment, great hosts!