Hello !
I was wondering, do you have a list with all those things that you need to be built into your backend? How are those reservations processed? And what payment gateway do you plan to use ? And what are the exact functions to be built into your backend?
PS: I understand French pretty well, I could easily read your message, but I'd rather say in English what I have to say, it comes hard to think and write in french :)
Regards,
Dragos