Thanks for the clarification, @Aurelien_Vionnet. Sounds like a great idea, and something that could be valuable for your users.
What you’re looking to do is possible today, if you create a new instance of n8n for each of your hotels. Those instances would have basic auth (single user name and password).
We are currently working on more advanced user management (which would enable you to have a single instance with different, segregated accounts), but it will be a few months before it’s ready.
It’s worth pointing out that if you’re integrating n8n into your own product, you may need a license. If that’s the case, we try to structure things fairly so that there’s no up-front cost before you know that n8n is valuable for your product. I’ll send you a direct message to discuss further.