I really appreciated mostly being left to my own devices i my room. The father and mother did not speak much english, but I was able to communicate with them anyway with some sign language.
I got keys to the apartment, but the lock was somewhat difficult for me to open. But the father or the mother was quick to open the door for me when they heard me twisting the key to the left or the right :-)
The location was fine, only a five minute walk to the subway, and plenty of pastelarias and shops nearby where I could buy a beer and a sandwich cheaply.
There was no TV in my room, but they had Wi-Fi which worked fine with Netflix on my computer, except for the last night.
A bonus for me as a smoker was that the room had a balcony where I was allowed to smoke.
I had no problem sleeping, very quiet at night except for the occasional bus passing by outside.
The subway (or Metro as the call it) was easy to navigate, About twenty minutes to go to the very center of Lisbon. Cost was €1,95 for a single ticket from a machine.