Please look at the PDF file sent to you after successful payment.
It shows the boarding point's address, a picture of the counter, and its location on a map.
If you are not familiar with the location or find it difficult to get there, you might show the ticket to a taxi driver or ask the staff at the front desk of your hotel to organize a transfer to the boarding point.
You can also call the hotline on the voucher to reach the carrier and ask them for specific details.