Hua Hin is located about 300 km south of Bangkok. It can be accessed easily by car, bus or train. By car you can either start from Bangkok by Phetchakasem Road (Highway 4) of Highway No. 35, the Thonburi-Pak Tho Highway, and later join Highway 4. The tricky part is the start out of Bangkok, and try to find the most suitable bridge over the Chao Phraya River to access these hightways. Trains leave from Hua Lamphong Station. The trip takes about 4 and a half hours. Hua Lamphong Station is the end station of the Bangkok MRT subway. You can check the train schedule here. Many buses run between Bangkok and Hua Hin, and leave from Bangkok's Southern Bus Terminal. The trip takes 3 hours or less. The disadvantage is the location of departure and arrival. It may take quite some time to reach the Southern Bus Terminal (or to reach Central Bangkok is you arrive there). The most convenient way (we did not try it ourself, since we only found out belatedly, is by minivan. Minivans depart for Hua Hin about every half hour from Victory Monument (located at skytrain BTS station). Depending on traffic, this is likely the fastest way of transport. Priced at 200 baht. Terminal in Hua Hin off Petchkasem Road in the centre of town. [ From Bangkok : If you come by skytrain to Victory Monument, take exit 4. Walk towards the monument, you will see the minivan and the ticketing office after about 50-100 meters, just before the bend in the road ]
Hua Hin is situated along the coast of the Gulf of Thailand. At the Northern End of the longitudinal town is Wang Klai Kang Won, the Royal Palace. The Palace grounds actually abut Phetchakasem Road. If you turn left a little bit further down (when coming from the North) you will enter the area where most of the cheaper accommodation in Hua Hin is located. It comprises of an area less than a quarter of a square kilometer between Phetchakasem Road ot the west and Naretdamri Road along the beach side.