Alfama Chic 2 is a great apartment.
We stayed there for one week with 8 people. You are right in the middle of Alfama, so it's easy to get around by foot: Restaurants, Museums, Shopping, Castle.....
Electrico 28 Stop is in front of the house and the Metro Stop Terreiro do Paço is a 5 minute walk (35 minutes from the airport).
Enjoy your stay in Lisboa!