The trees had just started blooming, but I know they will quickly reach their culmination and then turn into foliage. Probably, we will be able to see the trees in full bloom at the next weekend and we could enjoy blossoms quite much even this weekend.
If unfortunately you cannot make it by the right time of cherry blossom viewing, you will still be able to go upstream to see tulip flowers (tulip flowers can be see until the middle of April).
If you prefer bustling atmosphere of the festival, I recommend you to walk around the Hamura Bridge; there are food and drink stands here and there, monkey show, and even footbath service using hot spring water brought from distant onsen places. If you are a person who loves a quieter environment, you can walk upstream to the bank along the river, where cherry trees are planted and you can admire blossoms sitting under a tree in a relaxing mood.