Deep amongst the stalls and bustle of Seminyak likes Warung Murah. It wouldn't ordinarily have appealed to me except that my brother insists it is his favourite warung from previous trips to Bali, and once he finds a place he likes to eat at on holiday, he goes there 2-3 times per day. He had been waiting the entire trip to take me there. Apparently the place is well reputed amongst expats and surfers.
The concept is slightly different to your typical warung. Essentially it's a display buffet and you ask the staff to pile up your plate with as much as whatever you want. They determine (assumably by sight and experience) what you to charge you.
The food is cheap, good and there's a great variety of vegetables, fish and chicken. The biggest benefit is you get a bit of everything rather than having to stick to one meal. Can't argue with that!