We recommend going by taxi on taximeter only (ignore the touts in the airports that tries to sell you overpriced city transfers).
By BTS Sky Train
The closest BTS Sky Train station is Saphan Taksin. From Saphan Taksin it is a 15 minutes walk to New Road Guest House.
By River Boats
The closest riverboat pier is pier number 1 (Oriental Hotel).
By Taxi
Ask the taxi driver to go to “Bangrak”, which is the area in which New Road Guest House is located. Then ask him to go to Charoen Krung Road between soi 34 and 36 (very close to the Main Post Office).