Route 1:

From The Hague Central Station (CS), take bus number 28 and get off at the World Forum stop. 

The embassy is approximately a 7-minute walk from there.

Route 2:

From Den Haag Train Station (HS), take tram number 1 and get off at the Adriaan Goekooplaan stop. 

The embassy is approximately a 6-minute walk from there.