The building is a light tan color. It has a large grey strip across the top with "Tweek Bros. Coffee" in red, as well as the logo. Inside is a counter where Mr. Tweak and Mrs. Tweak are found. There are also various people inside sitting or standing at the counter. In the back is the room where the coffee is made.
Mr. Tweak sells potions to the player. It is the only place you can buy the Speed Potion Ultra.