If another need this, so I did:
copy template (yourtheme/woocommerce/order/order_details.php)
in order_details.php changue las line:
wc_get_template( 'order/order-details-customer.php', array( 'order' => $order, 'item' => $item ) );
in order-details-customer.php add:
<!-- datos del vendedor -->
<div class="col-2">
<header>
<h2><?php _e( 'Vendor Details', 'woocommerce' ); ?></h2>
</header>
<?php foreach( $order->get_items() as $item_id => $item ) { ?>
<?php
$product_name = $item['name'];
$product_id = $item['product_id'];
$vendor_id = get_post_field( 'post_author', $product_id );
$vendor_data = get_userdata( $vendor_id );
$vendor_email = $vendor_data->user_email;
$vendor_name = WCV_Vendors::is_vendor( $vendor_id ) ? sprintf( WCV_Vendors::get_vendor_sold_by( $vendor_id ) ): get_bloginfo( 'name' );
$vendor_phone = get_user_meta($vendor_id, 'billing_phone', true);
$vendor_details = ' Producto: ' . $product_name . ' <br> Artesano: '.$vendor_name . '<br> Email: ' . $vendor_email . '<br> Teléfono: ' .$vendor_phone;
echo $vendor_details;
?>
<hr>
<?php } ?>
</div>
<!-- /datos del vendedor -->
If there are several products on the order are displayed correctly identifying the vendor by the name of the product.
Thanks Ben for your help!