We really enjoyed the place!
The apartment is in a good spot, right next to the metro, so you can basically get to anywhere super easily.
The apartment was very clean and even though there were other 4 rooms, we barely felt like it, thanks to the other guests keeping the place clean, not making noise and the fact that there are multiple bathrooms
Flavio is super responsive and the check-in was one of the easiest I ever had. Very instructive, including video guide
The apartment is equipped very well, with the washing machine including soap and softener and the kitchen has all you need.
The only thing to notice is that some of the beds (2 out of 3 we had) were a bit squeaky.
It didn't bother us at all, but those that have trouble sleeping might be bothered by it.
We really recommend on this place and definitely will come back on our next visit to Lisbon