They do not know what time cherry blossoms will bloom in Kyoto.

It surely blooms from late March to mid April.

This is the best itinerary when you stayed for 3 weeks.

You will visit Sakura spot near the inn on a daily basis for a week by bicycle.

If you buy a weekly JR pass, you will visit the popular Sakura spot in Kansai by JR. 

Osaka Castle, Expo Park, Kobe, Himeji Castle, Hiroshima Miyajima, others

Another week, Ryokan, Onsen, Maiko dinner, You will be able to visit shopping and theme parks.