Maebashi City is 70 min from Tokyo. It's an exciting art and nature city, including nearby Mt. Akagi, Lake Onuma, and more. It's also a good base to use to travel around the region.
Nakagawa Town is a cozy riverside town 2.5hours north of Tokyo with a ukiyo-e museum, pottery culture (Koisago-yaki), an onsen, and Iizuka-tei hotel. It's a great place to experience the Japanese countryside.