Very enjoyable stay at Fabiola & Antonio's place. The apartment was nice, quiet, clean, and well situated.
Alfama was a great neighborhood to be in as well. It has many windy roads, but it's easy to navigate with a phone. Lots of activity but tucked in a corner where you are away from the large mobs.
It was easy enough to get to from the St Apolonia station and a close walk to the Rossio station which made it convenient for arriving from Porto and taking a day trip to Sintra.