I walked past this new location a few times while trying to find it (lol I'm a little directionally challenged) so make sure you look carefully! The sign is kind of hard to see. I came in at around 11:30am, which is when the restaurant opens, and it was already quite packed with people inside.
Nonetheless, the service was great - was approached by both the hostess and our server really quickly. Everyone seems pretty friendly even though the place is always so busy. This new location is bigger than I remember the others to be. There are two floors so hopefully the long waits won't happen too much here.
As for the food, I absolutely love the Three Flavoured Pad Thai. I've been to Khao San Road a few times now, and have ordered this dish every time. It just never fails to impress me - it's always super tasty with lots of unique and distinct flavours compared to other Pad Thais that I've tried. Simply delicious! The Thai Iced Tea is awesome as well and I would definitely recommend trying it for yourself. It has an amazing kick to it and gives you a more complete feel of an authentic Thai meal. I haven't tried any of the other items yet but I will surely be back to do so.