Nice idea! What did you use for your hotel dataset source? I've been wanting to work on travel based app idea with hotel integration, but seems like most providers (like booking.com) lock down their data.
You can sign up as an affiliate with both Booking and Expedia to get API access to their data. It's meant for people who are going to run their own hotel booking sites with Booking/Expedia content, so it's not quite as trivial as a random free signup, but it shouldn't be too hard to do for a real business. OP's site appears to be affiliated with Lexyl, which owns some other hotel booking sites, so I assume they already have this access.
That said, I would consider scraping, even with API access. In some ways the API access is both limited and binds you to their terms of service, and depending on the legalities in your jurisdiction, scraping could be more effective.
