Chris Hynes said:
Looks like Google Sites doesn't allow iframes in their HTML box: https://support.google.com/sites/answer/2500646?hl=en - Our widgets use an iframe to embed the content in your site, so they won't work in the HTML box.
It looks like they do have a way to write a custom "Gadget" (https://developers.google.com/google-apps/sites/gadgets/site_gadgets) that would allow you to embed, if you know HTML/javascript etc, but no drag and drop way.
We do support a bunch of other site builders, for example Wordpress, WiX, Weebly, etc. -- basically anything that allows you to embed HTML. There are guides for all of those here: https://www.ownerrez.com/support/recommended-reading/sites-widgets
Google sites does not support many things anymore. They do have iframe widget but you need to find one via trial and error as it is created and submitted by users - not by google. I could not find one that would work with booking/inquiry widget. You are better off going to a diff. provider like ehost and for a small fee (like $90 for 3 years) have a normal site. just my opinion anyway.
