I know people mostly try to avoid using third-party apps here. However, Elfsight's Google Reviews widget provides an opportunity to pull reviews for a business without a physical address.

Just in case someone is interested, there is a guide on how to adjust that: https://help.elfsight.com/article/1056-google-reviews-how-to-add-reviews-of-a-business-with-no-physical-address

Regards,

Elfsight Team