Sure it's a little dingy-looking, but the bar stools are comfy, there's a pool table, and the staff is usually more than willing to play Connect Four or dice games with you.
Haven't tried the food there, but the staff was totally cool with getting grub from the outside and eating it in the bar. My friends often even get food delivered there!
It's in a central part of town, too - just down the street from Heart of Darkness, and in an area that stays really busy late at night. Great for getting food and tuk-tuks home, and good for bar-hopping.