<a href="https://deskloft.org/phoenix/the-department/" title="The Department — Coworking Spaces in Phoenix"><img src="https://deskloft.org/phoenix/the-department/badge.svg" alt="The Department — Coworking Spaces in Phoenix" 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.