About right location

I just opened my property on Booking. When I was finishing they asked me to confirm my address and will send a letter with the code. But this building is complicated and Booking.com map doesn't show the right address. It shows 2 Rocaplana, Salou, but my legal address is actually 3 Rocaplana. But Google map only thinks the whole complex of buildings is nr. 2. My apartment and several others are exemptions as we have  a private entrance from another street -  Carrer de la Cala de la Font, 16, Cap de Salou. When people are coming I sent them this location as it is at the entrance gates. But the Booking map didn't allow me to put that on. So there is no way I will receive that mail from Booking to confirms the location. What should I do? Kristine Zonne