In general the apartment was ok but we ended up having some major issues with it.
The advantages: the apartment looks ok, in a reasonable price and about 25 minutes away from Rossio with public tranaportation.
The disadvantages: the building is old and loud. The apartment is 2 narrow staircases away from the ground floor, very difficult with big luggage.
We had flies in the living room that kept coming back, even after spraying them and closing the windows. We killed over 10 and there were more. It felt really unclean and unsanitary.
After notifing the host and having no solution offered to us, we ended up leaving the apartment after 2 nights (out of 7).
This might be an isolated incident, but we were disappointed.