Everything was really as explained on the ad. The house was as in the picture; a single cozy room with everything you may need, a large bed, a couch and a small tv, a little kitchen and a bathroom, a studio.
The host were really nice. Even do we didn't speak the same language they solved the doubts we had and recomended us places to go and things to see.
As other users say, at first the neighborhood can seem a bit peculiar and unsafe, but you'll see that it is just the first impression.
The only if that we could find was the shower, a little bit small, but that's it.
We found it perfect for our stay in Lisbon.
I would repeat without a doubt!