Communication through messages was very smooth, and they were very kind. I think it is no problem that they do not have a physical reception inside of the hotel. Also, the area is very convenient - it requires only 5 min to get to the nearest station and supermarket. Also, it was easy to access Amager beach.
Note that the hotel is located next to the car repair company and it sometimes makes a big noise and smoke of tobacco reaches your room if your room faces it. This is not the hotel's fault, but it was very stressful for me, especially on a hot day I need to open the window. If you're sensitive about the smoke, maybe you should ask to have room considering this point.