Concierge.com's insider take:

Ueno is the old-fashioned part of town that's popular with visitors who come for its cultural attractions. Several museums (including the Tokyo National Museum) and the Festival Hall are clustered in Ueno Park, which is also home to Japan's oldest zoo and Toshogu Shrine. The park has more than 1,000 cherry trees and is a popular spot for spring cherry blossom viewing. Ueno is close to Akihabara, also known as Electric Town, which is the place to go for the latest gadgets and electronics. The neighborhood is also ground zero for Japanese denim; stroll through the market (which was first established in 1949) that runs alongside and under the train tracks. Local brand Hinoya has not one but three shops—Plus One, Plus Mart, and Sun House—selling sought-after locally produced jeans by Burgus Plus, Momotaro, and Sugar Cane along the side street.—Updated by Rebecca Willa Davis