<a href="https://deskloft.org/indianapolis/alpha-office-suites/" title="Alpha Office Suites — Coworking Spaces in Indianapolis"><img src="https://deskloft.org/indianapolis/alpha-office-suites/badge.svg" alt="Alpha Office Suites — Coworking Spaces in Indianapolis" width="300" height="84"></a>

Paste it into your website — most site builders (Wix, Squarespace, WordPress) have an "embed code" or "custom HTML" block. The footer is a good spot.