My friend and I loved staying at Maria's apartment. The flat is very centrally located in the Bairro Alto. It's well-furnished, large, and quite comfortable. We walked to great restaurants and bars within a few blocks.

The apartment is on the 4th floor of a walk-up so if climbing stairs is not your thing, this won't be the place to stay (Lisbon would also be a challenge if you don't do stairs/hills). Since it's in such a central neighborhood, it can get kind of rowdy at night so expect some street noise from partiers. This didn't bother us at all though.

I highly recommend Maria's apartment!