It is located close to the street toward the entrance of the Matsumoto Castle and you don’t need a reservation in advance if you are not from a large group.
So, why don’t you look into the shop? If you find your favorite costume from various kinds of them, use the wearing & rental service, walk to the castle (just 5 min) and take perfect photos with the castle in the background with your camera or cell phone.
A professional dresses you in kimono or ninja wear only within 15 mins.
The rental fees start at 3,500 yen (for 2 hours).
And, if you wear a kimono around town, you can advantage of special discounts offered at times during the summer.
One is of these is the “Nakamachi Street Yukata Festival.” During July 1 and 18, visitors wearing kimono or yukata can get special service in 29 restaurants, cafes, izakaya (Japanese pubs) and bars.
Another is free admission to the Matsumoto Castle for visitors wearing kimono between August 6 and 16.
See this page for the details.