It's not a fancy place, it's often full of tourists (as you might expect), the prices are reasonable, they take charge cards...and it's air conditioned. That might not mean much to you at the moment, but after a few hours wandering in the hot, crowded maze that is Jatujak you'll understand the appeal of a cool place to sit and rest for a while.
The menu is fairly extensive, as Thai eateries go. The service has always been fast there, and the food has always met with the approval of Thai friends who have eaten there with me, be they vegetarians, Muslim or seafood fanatics.
The neon sign on the outside window (at the end today) is kind of hard to miss, and even if you do you can't mistake the inside of the place if you look at the ceiling: it's been covered with color comics from the Sunday paper. The top photo how the place looks today, and the photo below is how it was on one of my first visits there, taken from about the same spot.
The presentation is more than a street-side restaurant would do, and less than a proper dinner house. There are a few examples below:
This cashew chicken dish came in a crisp noodle nest
If you're dragging yourself around in the mid-day sun you might try Toh-Plue. If you do, let me know how you liked it. The food, I mean - I know you'll appreciate the chance to cool off and rest!