How to get comment images stored as serialized comment meta

What you get is fine, it’s the image id, now you just need to loop them and output the structure that you want, for example.

if (!empty($images = get_comment_meta( $comment->comment_ID , 'reviews-images', true ))) {
    foreach ($images as $image_id) {
        $image_src = wp_get_attachment_image_src($image_id, 'full');

        // Now you have the image src, $image_src, you can do what ever you want here
    }
}