At the corner of Soi 6 (opposite Tesco Express) you can find a small shop called Smoothie Blues, where you can have the best breakfast in town. Don't try their mango 'smoothie blues' - you might get addicted to it.
In the small soi between Nimman Hemmin Soi 11 and 13 is Sumo Sushi. Japanese food Thai-style, not expensive. A few meters away is the beer factory with a huge selection of imported beers and a bit further down the street to Soi 9 is a Japanese Yakiniku Grill. The grill is build-in to the table and you prepare your food yourself.