Ate there in December. Excellent! You won't be disappointed. It's actually in a separate building right next to the Sukhothai.

Maha Naga is also suppposed to be very good, but didn't get a chance to eat there. Next trip. See http://www.mahanaga.com/.

You might want to look in the Asia travel forum; lots of good suggestions on places to eat in BKK. Have fun!

Oh, if you want to try Celadon, make a reservation. When we went, a couple walked in ahead of us without one and were told the wait was two hours.