I loved staying there. The place was really clean, and modern, there was everything that is needed for the stay and even more. Really nice furniture, plates and cups, welcome wine bottle. Everything works, bed was very comfortable. There was an AC there, was very nice to be in a warm place after a rainy day in Porto.
Easy to check-in: you just receive the codes and can come at any time, no need to meet anyone to give you keys, etc. The location is perfect, everything is near and can be accessed just on foot.
Check-out is the same easy, just leave on time, closing the door.