We stayed 4 days at the apartment and had a lovely time. The place is really well furnished, with everything needed for a lovely stay: good bed, fully equiped kitchen, washing machine and AC.
The neighbourough is not so turistic but with some nice coffee around and an ALDI to do grocery shopping. Closet metro station is Marques de Pombal 3 min walk! The yellow line will take you in 10-15 min into the art of Lisboa.