I need to implement a link which redirects to the url of the last order of the current user

How do I do that ? 

I have a code that load the last order, but I need to get the URL

```
        $orders = $this->_orderCollectionFactory->create();
        $orders->addFieldToFilter('customer_id', $customerId);
        $orders->addOrder('customer_id');
        $orderId = $orders->getLastItem()->getData('entity_id');
        $objectManager =  \Magento\Framework\App\ObjectManager::getInstance();
        $order = $objectManager->create('\Magento\Sales\Model\Order')->load($orderId);

```