From Amsterdam Centraal railway station
From Amsterdam Centraal railway station you can take a metro/tram in any direction. Get off at the Weesperplein stop and take the Valckenierstraat/Roetersstraat exit. Turn right onto the Valckenierstraat (this street leads directly to the Gijsbert van Tienhoven building).

From Amsterdam Amstel
From Amsterdam Amstel station, take the metro/tram in the direction of Amsterdam Centraal railway station and get off at the Weesperplein stop. At the Weesperplein, take the Valckenierstraat/Roetersstraat exit. Turn right onto the Valckenierstraat (this street leads directly to the Gijsbert van Tienhoven building).

Tram
Routes 7 and 10 also stop at the Weesperplein.

From Utrecht
Leave the A2 motorway at the S110 exit (Nieuwe Utrechtseweg). Turn right onto the President Kennedylaan (S110) and continue along the bank of the River Amstel. Turn right at the Torontobrug bridge (S100) onto the Mauritskade. Continue for about 850 m. and then turn left onto the Korte 's-Gravesandestraat. Turn left at the end (Sarphatistraat) and take the first right (Roetersstraat). Airneth is almost immediately on your right. 

From The Hague
On the A4 motorway, take the A10 motorway (ring) and leave the motorway at exit S112. At the bottom of the exit road turn left (Gooiseweg) and at the roundabout (Prins Bernhardplein) turn right onto the Wibautstraat. Turn right onto the Nieuwe Achtergracht and turn right again onto the Roetersstraat. Airneth is on your left, just before the end of the street. 

From Noord-Holland
Take the Amsterdam ring road (A10): leave the motorway at exit S114 (towards 'Centrum, Artis, Zeeburg'). Continue through the Piet Hein tunnel and turn left (Panamalaan) and follow the signs for 'Centrumring (S100) ' Zeeburgerdijk, Mauritskade). At the traffic lights on the Mauritskade, turn right (towards 'Artis, Centrum Oostzijde'). Turn left at the first traffic lights into the Sarphatistraat. The second street on the right is the Roetersstraat. Airneth is almost immediately on your right.