CHS is held at the ARDA Language Centre (see the red arrow below).
When driving from downtown Vientiane towards the airport on Setthathilath Avenue (Luang Prabang Road), you will pass Fa Ngum Statue and Park on your left and the Laotel Vientiane Hotel on your right.
Next look for the PV Oil gas/petrol station on your right and turn down the road immediately next to it. ARDA is about 100 metres down this road on the right hand side. Parking is in the parking garage at the end of the road (turn right at the end of the road and then immediately right again into the garage).