Amazing apartment, BUT...
Here is what you need to know.
On the positive side:
The apartment is spacious, kitchen enormous, living room cosy with a big TV.
Everything was very well equiped, and during the check in they provided soap for shower and cleaning material (sponge and stuff) for the kitchen.
Plenty of parking space and very close to the beach by car.
On the negative side:
As they mention in the description, the check in location is in Porto. That's about 14 to 19 kilometers away from the house (depending on which street you take), a bit above the center of Porto. This means you have to deal with Porto's traffic, finding and paying for a parking spot, etc. assuming that you have a car to get there. It took an extra 30 minutes of driving to get the keys, plus 25 more minutes to get back to the apartment. If you were planning to visit Porto before your check in, this might not be a problem. But if not, include this additional effort and expenses into your calculation.
On the positive-negative side:
Right next to the check in location there is a supermarket to do your shopping and a Fitness Hut to squeeze in an extra workout if you are into it.
And if I remember correctly the end time of the paid parking on the street is around 7, so if you arrive like a couple of hours earlier, you can pay a little bit, and then have the car parked there till the night so that you can visit the city.