My family and I stayed two nights in the Explorer Flat and I can recommend it without hesitation. From the moment I inquired about booking until we left the city Diogo and Cousins were prompt, professional and responsive.
The flat was located on the third floor (no lift), clean and comfortable with all the standard amenities including a clothes washer (host provided washing soap). There was a market and restaurant two steps from the building entrance.
I chose this flat because it was located in old town and the host had wonderful reviews- they certainly met our expectations! Cesar greeted us at the airport and oriented us to the city- suggesting restaurants and sites. He was available by text throughout our stay and assisted us with taxi, car hire and directions as we moved on to complete our holiday in southern Portugal. If we visit Lisbon again, we will say in one of Cesar's flats!