The good: The place is well-furnished and modern and close to LX factory (if you're into that) as well as the neighborhoods of Alcantara & Belém.
The bad: It is a small downstairs unit off an alley, so (at least when I was there) it smelt musty, was a bit noisy, and had a serious dust and ant problem (I provided pictures to Airbnb).
The ugly: The apartment was listed as having "parking on premises," which was a major reason I had for booking it, and which was blatantly untrue. When I challenged the property manager/check-in person about this, I was told with a straight face that "parking on premises" actually means "free street parking" (a bold-faced lie) and that I could "take it or leave it," which meant either saying yes to taking the unit or finding a new place to stay last-minute on my cell phone while standing on the side of the street with my luggage. I had to take up the issue with Airbnb customer service, who sided with me and allowed me to cancel my reservation early. Ended up finding a much better and cheaper place.
The verdict: Overall a completely unpleasant experience.