Liliana's place is central to everything and is just as described. The unit is very clean, has a strong internet connection, and has all the amenities we needed. Liliana is very responsive and was very helpful in setting up our taxi to the airport at 2:30 am. If this unit is available for your dates I would not hesitate to book. One thing to note is that the unit does not have a dryer. It does have a washer but maybe plan ahead and bring a travel clothes line for hanging clothes on the balcony if you plan to wash.
For us, the all-day Metro pass was not needed since everything is so walkable and the taxis are cheap. Airbnb to Airport costs 11 Euros. Belem to Airbnb costs 8 Euros. The guys downstairs in the souvenir shop right next to the front door are very friendly and very helpful. They pointed us to Pingo Doce (5 min walk), a better and cheaper option than any grocery store in the area.