The apartment is exactly like the photos! Very modern, small but well laid out, and there is no clutter at all. We didn't cook but there was plenty of pots/pans. Bed was very comfortable and the sofa bed trundle was also comfortable. Check in is done through an app, then after that you use a normal key. We had no problem at all with checking in using the application, I think it was very easy and clear. But this could be an issue for travelers who may not have data in Spain.
The apartment is on the ground floor, and while it is on a quiet street you do hear if people are noisy outside. The bathroom was very spacious and the shower is modern with good water pressure.
The main entrance of the building basically has 2 doors for 2 different vacation units. When people come in and out in this little entrance, you do hear them in the apartment, this might be annoying for people who are light sleepers. Of course this just depends on who your vacation neighbors are.