Excellent place! No difference from what's in the pictures. By far the cleanest Airbnb we ever been on. Absolutely no complaints about that. They take very good care of the place, it is very well organised and well managed. Rules of the hous are described in a nice way, written over the place's walls, mirrors, doors, etc in a logical manner, wich turns co-living with other guests a lot easier. Those rules were clear and reasonable
The place is silent and we were lucky about other guests with whom we shared the apartment. Everybody was polite and behaved nicely.
It is uphill indeed. The path from the metro stations is very, very steep. Our advice is for you to use private transportation if you have any additional luggage. We carried three bags from the Martin Moniz station and it was not a nice experience really! But if you carry very light luggage or no luggage at all it is good exercise for your legs after so many Pasteis de Nata and other delicious pastries you are going to enjoy in the city.
Next time I visit Lisbon I will certainly be looking for one of the Fernandes' Brothers places for sure!