The good: The person we were in contact with was not Goncalo/Joao - it was Maria. She was very helpful and responsive throughout the stay given we had so many issues. Not everything was fixed in time for our stay.
The apt is very central and walking distance to most places/bars/etc. I would recommend the area if you are young, looking to go out etc.

The not so good: The quality of the apartment is not good. It is not very clean, the amenities are bare minimum. I would say it is fine if you are in college or young and looking for a cheaper place to stay. If you are looking for a nice, upscale place this is NOT it.
The laundry machine which we absolutely needed didn't work for the first 2 days which was frustrating for us.
The shower head was not appropriately fastened so would move every time we would try to shower. The host mentioned they are fixing this but it wasn't fixed in time for us.
There were bugs in the apt.
Wifi was unreliable and did not work at all for one of the guests the entire time. I think it had to do with a max devices (we had 4 ppl in our apt and it would only work for 1-2 people at a time).
The bldg itself smelled horrible (but the unit does not smell).
There is a really loud dog in the bldg that does not stop barking from ~3-6am?