Great place. Outstanding location. Within a few-minutes walk of the Monte Abraão train station, where a train can be caught to central Lisbon, the Altice Arena and Sintra, all direct and all within 30 minutes. Extremely easy access to a grocery store. Also a great location if you want to get a feel for what the Lisbon area is really like for locals. Erineu and Helem are outstanding hosts and very caring. But do note that they do not understand English. Although this is generally not an issue at all due to the Airbnb messaging system as well as Google Translate, it did partially cause me to unintentionally break a house rule before they corrected me and I never broke that rule again.
One more note for anybody staying there: be really careful if you have your window and door both open as, one time I did, and the wind slammed my door shut. Unfortunately, that locked the door, my key was inside, my phone was inside and my shoes were inside, and I had to wait a few hours for them to return home so that I could get back into my room. But just put something in front of the door or carry your keys with you if you go into the kitchen or bathroom.
Bottom line, I was very happy with my stay here as everything went smoothly for the vast majority of my three-week stay.