We really wanted to love this place but just couldn't. Let me start with the biggest positive, the location. It really is convenient, as in an easy walk, from everything.
The things that I'm mentioning which we didn't love are so that others can be aware of them before making your decision.
As at least one other person pointed out, it's a very dark place with the only windows in the main area opening into equipment shafts ,which aren't very pleasant. The windows on the street bring in light but it's noisy at night so they need to be closed (and I also used a white noise app for the noise).
One odd thing about the main bathroom was that it was completely glass, including the door on the toilet.
Although it looked clean there was a wet rag and wet sponge in the kitchen, which seems unsanitary if the same rag is used each time. We had booked two stays ahead of time so we could travel outside of Lisbon in-between. The same wet rag was there when we came back!
Lastly, the hosts, who own multiple properties, communicated most of the time outside of Airbnb. Airbnb specifically recommends only communicating within their system for protective purposes. It's odd that a host wouldn't follow those guidelines.
Overall, if you're picking by location, this was certainly satisfactory. But we didn't love it.