The transition from tile to wood is terrible. It would be far better to make them separate floors. And there's way too much empty space, especially behind the right counter. Sixteen tiles? There should be 2-3 tiles back there, since it appears to function as nothing but a gate. 5-6 tiles max. Too much space makes a map look empty, and if you try to fill it, it becomes terribly cluttered. As for the left counter, since there's a PC behind it, I assume the player will be able to walk around back there. So that being the case, the player should also be able to talk to the information guide from the other side of the counter, so it should be only 1 tile tall. You're also trying to make a corner on a wall style that doesn't have the tiles to do it. Instead, just use the black squares. It's much simpler, and more aesthetically pleasing.
AND THE PLANTS. OH MY GOD THE PLANTS.
Sorry for ranting.
I took a semester of interior design, plus I've been playing Sims since I first started using a computer.