The house is in a great spot, really close to the subway and tram. Despite being on a hill, it's an easy and pleasant rise from the square below. I would definitely stay in the neighborhood again.
The unit was completey clean, with good access to internet and to other rooms (living room and kitchen). The only problems were the check-in (miscommunication and no address in the room listing) and the absence of a fan on the room. Lisbon is incredibly hot during the summer, and sleeping was difficult without A/C or fan.
That said, it wouldn't keep me from booking this place again, as it is a good bang for the buck.