We stayed 2 weeks and really loved it. After week one, we got a full cleaning at no extra charge. They made a special visit to turn up the hot water for us. The kitchen has everything you need and a nice assortmentof goodies. The bed was comfortable, there's lots of room for your stuff, the WiFi was great and the windows very sound proof which is great because the tram is right outside and starts early. The bathroom is small and the shower is not for large people. The location is walking distance to many sights (but Lisbon is huge & hilly) but not in the middle of a lot of action so we slept well.
I'd stay here again Carolina and Pedro were both great to deal with.