Custom map on Squarespace (ideally via Mapbox)

General information for the website: We are on Organic Craft Beer
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of every page/module: I need someone to help me develop a custom searchable map for my customers to find where they can enjoy CELIA. Ideally I want as much social interaction as possible but it must be clean and classy and be easy to add new places to.

My site is built in squarespace and I currently have a custom map on mapbox with my data in.
Description of requirements/features: The map should have a good search facility by postcode or words and provide 3 to 5 listings in written form and all listings within a reasonable radius e.g. 10 miles.

I would like to use Mapbox to integrate with Squarespace as I believe this gives me the most future flexibility to add more features. However I am open to google maps, POWR, openstreet or others.

My existing page is here - https://celia-lager.squarespace.com/new-page/
Similar urls: http://omissionbeer.com/find-omission/
Extra notes: I am happy to give a much more detailed brief once I know the technologies the job recipient has