Nice and clean appartment. Not very big, but enough space for 3 persons. It might feel a bit too small for more people, but since you're out discovering Lisbon, it may be just fine.
Marharyta is an attentive host. She gave us a few recommendations for breakfast and drinks. Fábrica da Nata is just down the street and great for a cheap breakfast, lunch or coffee + they have fresh pastéis.