We spend 8 days at Goncalo's place, and it was just perfect!
Great location, only 5 minutes drive from the town and from several Ericeira's beaches (3 minutes to Foz de Lizandro and the wonderful Na Onda surf school, 3 minutes to Praia do Sul, and 5 minutes to Praia dos Pescadores).
The apartment was spacious, sparkling clean, with all the comfort we could need.
Both Goncalo and his sister (who did the check-in and took the time to give us some advices on the area) were lovely, and very responsive to our request before and during our stay.
Highly recommended!