I stayed at Katarina's place during August 2021 with my girlfriend and some friends. The house is just in front of Ribeira d'Ilhas and you can see the spot from the balcony on the second floor. The design of the interiors is brilliant, the pictures almost don't do it justice. Outside there is a well hidden shack to store your surfboard, a rack to hang and wash your wetsuits and a Weber BBQ if you feel like grilling something. Katarina was super nice and helpful, she made us find beers, coffe, a bottle of wine, tabs for washing dishes for the first days already inside the house.
Couldn't recommend anything better if you happen to be in Ericeira