The location for this place could not be better, and that’s the main benefit. It’s also quite clean. This will serve well for most people, especially solo or couple visitors who come for a few days to see the main sites of Porto.
One thing though, many things in the apartment don’t work. The stove was stuck in locked position while I was there (and yes, I know how to use that type of stove), the TV had no box and couldn’t be watched (not a problem for me, but the person I was traveling with likes to watch as they fall asleep), there are no sheets included for the pull out bed so the listing of this as a place that has two beds is inaccurate, and even the plastic wine bottle opener was broken. Also, there were one and a half rolls of toilet paper (we were two people, there for five nights) so we had to go out and buy our own. None of these things detract from the fact that this is a clean place in a good location, but they were kind of frustrating. Also, it’s not run by an individual but a company, and the communication when help was needed was really lukewarm.
As others have noted the hill up to the apartment is quite steep. Not a problem, but something to keep in mind if anyone in your group has limited mobility.