Location, Location, Location!
This is the best in Alfama, you do not have to climb up the hills to get home, just 2 floors above with stairs but that's not so bad (and I have bad knees).
The buiding is by the main road, close to the water and all the main attractions The apt was clean, bright and had it's character. Everything worked properly and the hosts were on top of everything. I recommend this place and hope to go back one day.