Khao San Road is a great place to eat. I often come here for lunch with my friend who works nearby.
My favorites are the curries and the beef Pad Gra Prao. For the Pad Gra Proa I usually get the medium spice level, and somehow all the flavours and the spicyness just blend in together so well. The proportion is perfect, just enough to feel satisfied.
The curries are also amazing, very rich and flavorful each in its own way. At some thai places all the curries taste almost the same, here each curry has a distinctive taste. The Red curry and Massaman are my two favorite curries.
I also like the Khao Soi---the beef is so tender--- but I would not recommend it for lunch as its too saucy and splashes out of the bowl too much... Also, I wish there were more noodles in the Khao Soi to balance out the really yummy curry sauce better.
The Pad Thais, both the Sam Roas and the Street Style, are good but not great... The tamirand flavour is too overbearing for me. The pad thai at Thai Paradise on Baldwin was better I thought.
The waitstaff are friendly, laid back and add to the overall great ambiance of this place.