Really nice apartment, exactly as described. Nuno was a very friendly host who kindly waited for our late arrival after we were delayed getting from the airport. He also helped carry our luggage up the stairs to the 4th floor, which was appreciated after many hours travelling.
The apartment itself was very clean and well equipped with most items for basic cooking. The beds were comfortable with plenty of bedding and towels provided. The shower was occasionally a bit moody with the hot water running cold a couple of times before heating up again. But nothing major, just a bit of a shock to the system!
The bathroom suffered from a slight sewage smell during the night for some reason - I suspect a drainage problem, and don't know if anything could be done about that, being on the top floor.
Other than these minor niggles Nuno's apartment was excellent. The location is not central to Lisbon, but the public transport system is excellent and you can be in the centre at minimal cost in 10 minutes. I would thoroughly recommend the apartment!