Good things;
Nice welcome
Great location (close to subway and Porto attractions)
Modern clean apartment
Bad Things;
Loud neighbors (you may forget about sleeping the attractions start around midnight and finishing about 3am)
No daylight in the room (when you reveal the curtains, the neighbors look at each other's hands, when you cover, you do not know whether it is day or night) depressing.
The host does not reply to messages, we had some questions and issue related to the apartment.
Please take note that in the house regulations you are asked to keep a reasonable silence between 22:00 pm-8:00am,
but this does not apply to neighbors living next door so it can be loud at night :(