My experience at Filipa's was excellent. She was not able to meet me but everything went really well, with an easy check-in and everything that I needed in the apartment. I went for a conference at the Congress centre (Centro de Congressos de Lisboa) which is a 5 min walk. There are lots of small supermarkets, as well as many cafes and restaurants in the area. I didn't use public transportation but I noticed many close stops. Filipa also left a guide for public transportation in the apartment. The famous pastéis de Belém are about 20 min walking distance!
Filipa constantly checked up on me, asking if there was anything that I needed, and sent me suggestions of things to do and see.
Overall I really recommend this apartment.