Hi Sir,
How's your day today? Hope it's good.
First of all, my name is Nilton Heck and i'm a web developer from Brazil.I've a strong experience with websites development and responsiveness.
About your project, we need to understand it in two perspectives: a) the art creation/the design and b) the coding/mechanics.
Regarding the art perspective i could bring a friend of mine how's an outstanding designer to create your website according to your needs (and desires). This should be the very first step of the project, By the way, do you have any reference about how you would like your website to look like?
Now, related to the development, do you think this "booking" mechanics need to be complex (with login structures) or simple formularies? And, as you said, we'll definitely use HTML5.
Let me know you thoughts and we could take thinnest steps.
Regards and good luck in you hotel business.