I have stayed in many places in Lisbon area related with my work, but...
Carla's place is the BEST place I have stayed so far!
It is spotless clean everywhere in the house! House has traditional Portuguese touches in every single corner! It is really amazing, relaxing and charming.
Hospitality of Carla and her lovely family is the most valuable thing I would remember, she is always ready to help, easy going person and take care for her guest as part of her own family. This is the experience every host should offer!
Most importantly it's a HOUSE not a flat! You have the freedom to stay on the balcony or just walk around in the backyard. Location is very quiet and calm, and chillout atmosphere. It has good transport links to the beach of Carcavelos and to the Lisbon.
Highly recommended place to stay!