Local SEO Tip - inject content of reviews in the site's content structure
What I like to do is have references/mentions/citations to the Google Business Profile (GBP) reviews in the content of site itself.
Like if it's a page about "Accounting services for SMBs" and there are already some reviews on GBP of business which talks about or have mentions of like they helped out this small business.
Then having mentions of those on the page content is something good to consider from the content of page perspective. Like we have worked with so & so (link to review) and they have said so & so about our team members and services which we provide.
Also while talking about what some else said in the review its alright to use indirect speech but make sure to have it in the context itself rather than it being just a widget. Having a widget is alright but review text being present in the content itself is even better.
Also I suggest to do this not only on the main services pages but also in the blog pages too.