The apartment is super cool for young people. Through the stairs maybe not recommended for old people. You have a very nice view and a balcony which is in the shade all day long. Here the sun was shining the whole day and so it was quite good not to get the sun on your head. The kitchen is quite well equipped, but one should not expect to cook much, as the supermarkets are not as well equipped and accessible as in Germany. But eating out is quite cheap and super good in Porto.
We also slept well. The bed was very comfortable. Right next to the bed there is a window that lets the air in very nicely at night and even lets you see the stars. Although the apartment is a little bit outside of the city centre, everything is very easy to reach on foot. All around we had a very nice stay and the flat is absolutely recommendable.