Diego & Priscilla's place is a perfect base to explore Lisbon. Right next to the metro it is easy to find from the airport and a pleasant stroll or short metro hop to all the sights.
The apartment was immaculately cleaned, thoughtfully equipped and the bathrooms were brand new with great hot showers. I didn't spend long in the apartment so didn't get to meet other guests, but the common areas are cosy and inviting.
My only negative would be noise; the internal walls/door are paper thin so you hear everything from within the building. I always travel with ear plugs though so it wasn't too much a bother! The street itself is residential and quiet at night.
Overall a great stay and I would definitely stay here again if I was back in Lisbon!