Stripe

Integration for Stripe (Hosted-Seamless method).
Stripe Payment Gateway WordPress
Version 1.0
Requirements WordPress 4+
Price is one-time payment with no domain restrictions and no needed License Keys. This is a downloadable product that contains the installer zip file for the WordPress Plugin. A Pro version of one of the Vik Plugins must be installed. Free versions of the Vik Plugins do not support Payment Gateways.

This payment gateway will work with all Vik Plugins. After installing and activating this plugin on your WordPress website, you will be able to collect money through this payment gateway with your Vik Plugins.

It is not required to have an SSL Certificate on your website because the credit card payments are processed on the Stripe gateway but the details are collected directly on your WordPress website (that your clients will never leave), so for a better PCI compliance, Stripe recommends to have the pages in HTTPS with an SSL certificate.

http://www.yourhotelwebsite.com/
Vik Booking - Reservations Payment by Credit Card (Stripe example)