Though I'm out in the Pacific Northwest, we still have small living spaces like efficiency studios (~200sf). Saving space is about how well you can utilize the room you do have through storage and organization. I'm a fan of functional furniture where it serves multiple purposes like a storage ottoman or floor-to-ceiling shelving that can double as a work station. At the very least don't leave your walls empty; find creative ways to store and organize.
Here are a couple websites I frequent for inspiration: