I'm pretty short, 5'4". One thing to consider is a Bike Friday. First of all they make custom bikes for all sizes from little people to NBA players, and the bikes fit perfectly. Second, they have adjustable bike frames which, when coupled with the smaller 20" wheels, can be sized to fit anyone perfectly without buying a custom frame (they are called OSATA frames). You can call and talk to them. Nice thing about BF 20" frames is it is much easier to stop and the step through makes it a lot easier in traffic, too. Lower center of gravity. And small wheels accelerate faster. I love my BF bike. So much easier to ride and handle, less big heft to manage around.