In the "Olden Days" bathrooms and kitchens were much smaller than those of today. If I found this house for sale, I think I would have to make some changes for today's lifestyle.
I would take the middle chamber/bedroom and put in a hall bathroom as well as a walk-in closet for the back chamber. That would let the existing bath become the master bath with the removal of those two itty bitty closets. I would also increase the kitchen size by removing the pantry and back porch. I would create a huge deck/ porch space outside the roof line of the house instead.
I especially like the access to the front porch from the dining room. Some lovely evening meals could be had there or it could be screened in for bug free time.
Could you make it work for your lifestyle or do you think it would destroy the simple beauty if anything at all was done to it?