This is one of the most practical apartments I have ever stayed in. It is absolutely huge and feels incredibly safe with the front shutter and very secure locks on the doors. The shower is absolutely amazing, although boilers in Porto are a bit mini, so don't stay in there too long otherwise it may get a bit chilly!
All the basics were provided and the addition of (incredibly effective) heaters made the stay a lot better than we were expecting, as we encountered the worst rain Porto had experienced in 5 months!
I can definitely recommend this apartment as very good value for money and a fantastic base for exploration. We were just under 5 minutes walk from Marques station and had a bus stop at the end of the road - which we made a lot of use of due to the weather and the hills!
Travel:
Public transport in Porto is incredibly inexpensive but can seem complicated when you first look at it. For the Metro and Busses there is one ticket. The region is split into zones and the tickets represent this. You can have a Z4 for example, which allows you to travel through 4 different zones. You cannot have multiple zones on your card at the same time so this is the best way to travel:
Buy a Z4 at the airport. This will allow you to get to Marques station (the nearest Metro to the apartment. You will need to travel to Trindade station and then go down the steps near the entrance to head on to Marques. Make sure to scan your ticket each time you travel and when you change trains. The fines are huge if you don't do this and there are plenty places to scan on every platform.
Once you have arrived and would like to explore downtown, it is likely you will only need a Z2 ticket, you can load multiple trips onto the same card (as long as they have the same zone value). For example you could load 10 trips which allows you to take busses and metro. Each trip (after first scan) lasts 1 hour so if you want to pop to the town to pick up food and head back, it is likely you will only use 1 trip - but remember to scan everytime!
I hope this is helpful! We had the system explained by a friend we were visiting who lives in Porto but I think we would have been totally lost without him!