Magnus was a great, attentive and responsive host, and was always eager to help out or provide recommendations.
Location is good considering the price and quality of what you're getting. Takes about 20 minutes to walk to downtown Ericeira, and 15 to the nearest beach (Praia do Sul).
Bear in mind that the apartment is connected to a blocked floor upstairs. Depending on the guests, this will affect your experience. In our case, we needed to sleep early for early surf classes, and the noise travelled quote easily from our upstairs neighbours parties to both living and sleeping area down below, which required earplugs to keep out.