Tried Six To Twelve for lunch after reading on this site. Despite the huge wood door, the entrance, set slightly back, is easy to miss. Inside the atmosphere and styling makes you think of Bangkok's Greyhound restaurants. Good food, served relatively fast and at a reasonable price. If you are staying at any of the hotels around Langsuan (Muse / Hansar / Anantara etc), then this place is worth giving a go.