Beautiful apartment, nice and clean and in a great location. The Martim Moniz metro station is just down the hill, as well as several bus and tram stops. We were traveling with our two young children (3 and 5), so the proximity to public transportation was key. It is also close to the beautiful Jardim da Cerca da Graça, a beautiful park with a playground for the kids as well as the miradouro da Graça from which you have a wonderful view of the city. We ended up going there almost every night with the kids, we all really enjoyed it.
The apartment itself is very comfortable and quiet with enough room for everyone. And the pool is a marvelous thing to have at the end of a long day exploring the beautiful city of Lisbon. Diogo was very helpful, giving us several tips on what to see and how to get around the city. We truly enjoyed our stay at Maria Mouraria and highly recommend it.