Dear Andrea,
Thank you very much for your quick response and clear answer! I will use your advice.
For new renters it is very important they know (see
http://www.kenchuanarchitects.com/help/article/484.html)
that they can't check bookings in the beginning.
I just started, my first guest didn't finish his stay yet, didn't close his booking yet.
So, all bookings now are automatically accepted!
Kind regards, René
I think Airbnb must make a check field at number of people. First of all for safety (fire) reasons.
My appartment has a Rental License of the Community of Marbella for max. 4 persons, by Law!