That was a right choice for our first time visit to Lisbon.
Apartment is located in old neighborhood by the St. Jorge Castle. Narrow, walking streets (occasionally walked by peacocks) with only residents cars allowed. Taxi, but not Uber, can get you almost to the door.
Magda and Diogo are wonderful people. From the moment you get through the door they will shower you with a good vibes and week(s) worth of a great recommendations for your stay in Lisbon.
Walking all over Alfama was wonderful and God bless elevators :) They close at 9pm.
We had a great time !!!