Clean and comfortable, with a great location for walking around Porto and/or taking the metro. We walked everywhere and loved it.
Apartment would be a better fit for two people rather than three because once the sofa has been made into a bed, there is no space in the living room.
If you are planning to do some cooking at the apartment, be aware that there is no salt, pepper, herbs or spices, oil, etc. You must also buy capsules for the coffee machine.
Similarly, no hand soap in the bathroom, little toilet paper, no cleaning supplies.
If you’re aware of that, though, it’s a great place to stay. We had a fabulous time in Porto!