This home is 300sft on the main floor, with the upper floor likely bringing the total to 600 or 700sft. The look and feel is that of a more standard suburban home (usually 1200-2000sft), but with a much smaller foot print. Single car garage, one full bath and one half bath, 3 bedrooms.
I like the uniqueness of this design, the main floor is 300sft, but with a bonus room over garage the total square footage is closer to 700 or 800sft. The only change I would make in hind sight is to take of the right corner of the garage and flatten it to match the property line making the house not quite so wide.