For your next Lisbon Trip, I hope you consider staying at Pedro's.
Other than the obviously great location, with most the significant landmarks within minutes walk away from the apartment, and the Tram 28 stopping right at the front door (not to mention the great view from the terrace), the most notable part of our experience was the refreshing thoughtfulness of the Host Pedro, and his mother Maria.
Our flight got delayed, so we arrived 4 hours after our agreed-upon check-in time. I was able to quickly let Pedro know of the delay, but we eventually arrived even later than expected since our luggage got lost (long story!). But even with all that delay, Maria was there to receive us right when we arrived, and cheerfully show us all the amenities even with her limited English. We were very touched for all the effort she took to get us settled in properly. Pedro was available whenever we had any question, and responded via chat very promptly. His family went out of their way to help us receive our Lost baggage when the Airport finally located and delivered them (I will not get into the details of that, but rest assured, their help was priceless). Pedro was also nice enough to contact the Taxi company for us ahead of time since we needed to book one to travel to the airport at 2:30AM to catch our early morning flight back.
The apartment itself is very nice. Its spacious, clean and well-fitted. Most importantly, it is very safe. As I mentioned already, the location is outstanding! Also, there are Grocery Stores, and Cafes right on the street.
The only caution I would like to provide is: Alfama is an Old city on a hilly coastal landscape with cobbled, winding streets at varying altitudes. So if you are somehow ill-disposed, or unwilling to walk uphill/downhill on uneven ground, the whole of Alfama may not be suited for you. My husband and I specially enjoyed the Old charm of the city though, so its totally personal preference. But, UBER and Taxis are always available so walking can be avoided totally.
Conclusion: Totally Recommended!