Gonzalo's apartment is amazing. We loved it in was very cosy, the fully equipped kitchen, comfortable beds, big living room, great and sparkling clean bathroom, washing machine after longer travel is always a bonus and for us the best location, not as busy as it is in the center. We came by car and easily found parking place in the streets around (parking os free). In Belem area we visited museum MAAT, Belem tower, LX Factory, even saw a long cue for famous pastries they are talking about. Found some great local restaurants.
Going to the other parts of Lisbon we used Uber, 6-7 eur to Alfama or Baixa.
We would love to come again.