The building is made to resemble a huge Chinese food box with noodles and chopsticks in it.
The inside appears to have a picture on the wall and some tables. Noodleman, a fish wearing a Chinese box costume similar to what the exterior looks like, runs the shop.
Role in episode
SpongeBob tries to apply for a job here, but he is fired because he makes a Noodle Patty. This is the last place SpongeBob goes for a new job after he is fired from the Krusty Krab. Closer to the end of the episode, Noodleman swipes him with chopsticks because his customers really liked the Noodle Patties.