This is a fantastic little top floor apartment. It has a kitchen, bedroom, dining table, a small living room with a couch, and a private bathroom. It's absolutely fabulous and has a great view, and it's only a few minutes walk from Praça do Comércio and the Tagus River, Barrio Alto (LGBT friendly neighborhood), and Av. da Liberdade (tons of restaurants and several convenient metro stations).
Luisa is a fantastic hostess, quick to reply.
The only problems are that the bathroom ceiling is quite low so if you are tall that will be an inconvenience, and there is no lift to go to the top with luggage, so you will climb many stairs.