Ueno Touganeya Hotel

Cherry blossom Festival in Ueno Park
https://www.gotokyo.org/en/spot/ev193/index.html
21st March to 7th April. /Light up time: sunset – 20:00
Place: Ueno park.
※Ueno park is has been famous for the best spot for viewing or experiencing cherry blossom. There is more than 1200 cherry blossom trees at the park and there are more than 60 different kinds of cherry trees. Japanese paper lanterns light up until 8 pm so you can enjoy the night cherry blossom too.

Cherry blossom Festival in Sumida park
https://www.gotokyo.org/en/spot/ev188/index.html
Place:Sumida park 5 min on foot from Asakusa station (Ginza line )
21st March to 7th April /Light up time: sunset – 22:00
※There are more than 700 cherry trees planted at the Sumida park from Edo period. You can enjoy the beautiful cherry blossom trees planted along the bank of the Sumida river by experiencing the Japanese houseboat or the Water-taxi/bus. At night, the cherry trees will be lighted up until 10 pm.

Weeping cherry tree in Rikugien Gardens
https://www.gotokyo.org/en/spot/ev163/index.html
21st March to 3rd April. (light-up term)
Light up time: sunset – 21:00
Place: 7-minutes walk from JR Komagome station(JR Yamanote line,)
※The weeping cherry blossom tree is 15m tall and 20m wide. This famous weeping cherry blossom tree can be seen at Rikugien Garden which is the feudal lord’s garden in Tokyo. It is worth seeing both the garden and the weeping cherry blossom trees and the garden will be opened until 9 pm so please enjoy.

For your reference
https://www.gotokyo.org/en/story/guide/march/index.html