The place is great and Maria is a great hostess. She always reply almost instantly to any queries and provide a fast in-person support if needed.
The apartment is surrounded by services, restaurants, public transport (metro, bus, tram) and areas for leisure.
The street where the apartment is located is close by Praça do Comércio and Rio Tejo, which means is all way flat, no hills.
The apartment has the infrastructure you need. I initially planned to stay for 1 month, then extended for another month. Everything works just fine (hot water, stove, fridge, cable TV, shower, microwave) and the Internet is ultra fast and stable.
Keep in mind the apartment is located on a busy street, but the renovated windows keep the noise away.