I looked up the MLS listing for you. On the picture of the office, it has in parenthesis that it can also be used as a bedroom, so my guess is that they have one of the bedrooms set up as an office. It also appears to have a formal dining room, but it's difficult to tell for sure from the pictures.
I would suggest you contact the listing agent. Or, if you are feeling shy, you are welcome to email me, and I'd be happy to contact her for you. I love representing buyers and finding the perfect house for them.
Best of luck in your home search!