And and and....The Dog's Bollocks! Only discovered the place in December, but have gone back twice since then.
The 'restaurant' is a bit out there and extremely, extremely basic! The restaurant is in an alley, as in, it is part of the alley...they use paper plates and if they run out, you get your burger in news paper. If you want ice in your drinks, then you have to go get it at the garage across the street. Doesn't sound to great, but the chef makes a limited amount of burgers every day and you'll understand why people go back or que "outside".
If you're uptight, stuck up, into fine dining or extremely timid, I wouldn't recommend it at all, but it is a truly different experience and adventure.
Other noteworthy mentions - for the food and the ambience
Rick’s Café Américain - somewhere in the cbd
Fire & Ice hotel - somewhere in the cbd (a bit pricey though)
The Odyssey Gastropub on Bree street - burger sliders (snack) and main was a tasteful experience
Beyerskloof restaurant (Stellenbosch) has a decent pinotage burger, whilst you do your wine tasting.
A friend had a burger at Speakeasy in Durbanville and it looked great.
SpeakEasy and Slug & Lettuce (opposite them) make awesome pizzas.