We would not recommend this accomodation to anyone - especially not for this money!!!
We stayed here for two nights, but not continuously (we went to Lisbona and then back to Porto). The sole reason we decided on this room was the arrival acceptance (Vania - Catias friend was the only one who could accept us in the morning). We stayed in a room which is not isolated well. In the evening we were cold, we had no heater, just a blanket (later on we got another blanket, but the air was crisp). The house itself was not clean - not the toilet, the bathroom, the rug in the bathroom was completely wet. If you wanted privacy on the toilet you had to use the shower couirtan because the doors are made of glass. Catia was in the time of our vacation in France, but this does not apologize the fact that someone closed (probably) her dog and did not walk it, to the extent that there were puddles of dog urin (which leaked to the hallway) and a poop. The higiena standards set in this house are real terrible, we were afraid to browse through the kitchen because everything was dirty.
Besides the fact the house was not clean, it was also dangerous - there were live wires in the bathroom, the light switch is broken, the upstairs didn't have any warm water, the toilet was not flushing....
Overall a terrible accomodation.
Porto is nice, visit it, but do yourself a favour and rent another room.