Diogo is a fantastic host. He met us at the apartment and helped us with our luggage. He then showed us everything and sent us great recommendations.
The apartment is very well furnished with everything you need including ground coffee besides a Nespresso machine and pods. The bed is very comfortable. The shower has great pressure and plenty of hot water.
The location is great for exploring the city and catching the train to Sintra. The short, steep climb up the hill is not as bad as we first thought (we are in our 70's; it probably won't phase you younger folk)
The only negative is that it is an old building with no sound insulation. You hear all the street noise. This also was not that bad as the street is very quite after 11 PM or so, but it did bother my wife a bit (I slept like a log)