We spend 6 days in the apartment and I'll just say it was perfect for 4 people: close to the center, the metro station and Alfama neighbourhood (such an amazing area), the apartment has everything you may need for your stay.
Besides, it is clean and just refurbished, so it provides a very pleasant stay.
Ana was increidibly helpful with everything: she gave us very good recommendations and what to do and not to do and was really kind when we let her know we were getting to the apartment before scheduled.
I'd highly recommend this apartment and will absolutely try to go back if I go again to Lisbon.