Here are the best recommended Marketplace Template for Magento 2 Ecommerce

1. Ves Bicomart - Landofcoder Marketplace Template for Magento 2 Ecommerce

https://landofcoder.com/ves-bicomart.html/

This Ves Bicomart is a wonderful Magento 2 theme for Multi Vendors Marketplace Experience. Because it brings 03+ Well-premade Design for Marketplace, Vendors' Pages, Product Detail Page, etc. Beautiful Design Templates Layout with flexible products types from different vendors will grasp customers attention at the first sight.

2. CMSmart multistore template for Ecommerce

Magento 2 Marketplace multistore is the perfect Magento theme with all Multi Vendor features and Magento plugins.