We stayed at João's house with four friends for a few nights and liked it a lot!
The flat was clean and modern and we loved the kitchen, which was equipped with everything you need. The location was also really good, there are some nice bars and cafés in only a few minutes walking distance as well as a supermarket. Also, there is the awesome italian Gélateria " nannarella" only a few minutes away.
The only thing that was not that nice, was the internet, since it was a little unstable.