URL Mapping Help

Hi,

I am needing some assistance with a URL redirect on my site. I am trying to monitor traffic flow for rental inquiries on my site. Given I have an external company that handles my rentals, people click the link on my site and it just goes to the external site. I was hoping to monitor the flow a bit better by using a redirect.

My thought was to have a page, rental-inquiry, and when someone clicks on the link, it would go to my page, then automatically redirect to the external site. I tried setting this up but it doesn't work when I actually click the page on my site. Here is how I set it up?

/rental-info -> https://stowecountryhomes.com/vacation-rental/black-rock-lodge/ 301

Any suggestions or ideas on why this isn't working or a better idea on how to make this happen?