Catching a bus from Sukhumvit to Khaosan is a bit of an adventure, and one sweet3 can recommend as you pass through Platinum and the central world area of Bangkok on your way to the more toruisty Khaosan road.

Street sellers on the way to Khaosan road
On the way to work
Setting up under bridges is common here in Thailand

See no evil…a quick stopover at Golden Mount
Golden Mount
Makahan fort
Democracy monument
Welcome to Bangkok
Khaosan road is still an attraction for tourists
Someone has to
Night market sellers in Khaosan road