Elegant QR Booking Website Build

I currently list my properties on Airbnb, but I want my guests to be able to book with me directly. The flow should be simple: they scan a QR code displayed in the property or on marketing material, land on a clean, elegant webpage, select their dates, pay, and receive immediate confirmation... (Budget: $250 - $750 USD, Jobs: HTML, Mobile App Development, Payment Gateway Integration, PHP, Web Development, Website Design, WooCommerce, WordPress)