Stayed here for three nights during a visit to Porto. Whilst it wasn't horrible, I wouldn't stay again.
The room was clean and fully-equipped when I arrived, but overall the hotel was let down by its service. It turned out there was only one key to my room, which is why it wasn't cleaned or restocked. I was only made aware of this just before my third and final night in the hotel. The concierge asked if I'd like it cleaned but at that point it seemed like a waste of time, though I took him up on the offer of new shampoo and soap.
Some of the staff were very on the ball and spoke good English, however when I arrived I was met by somebody who spoke very little English and with my limited Portuguese we ended up communicating through Google Translate.
Provided the housekeeping staff can access your room, they'll leave 8 small crackers and a miniature muffin. There's a bakery, Fumeiro, down the road which they direct you to for a fuller meal.
I was on the ground floor. There are bars over the windows so you can safely open them, but be prepared for people peering in. A drunk (?) man also garbled something at me when I was lying on the bed looking at my phone, which was fun. Obviously the hotel can't control this but if you're on the ground be aware.
Even allowing for how cheap this place is, the service really isn't up to scratch which is a shame as the rooms are nice enough.