Last week it was the last holiday week before going back to work and I took my son to Komazawa to make a bicycle ride together, I really like that open space, with that gym round!
With my surprise the adult rental was close, so only my son had fun with the children bicycle track. The reason for the closure of the rental was this:
The architects are the Azusa Co. LTD (株式会社 梓設計) , here their website.
Here there is a link (japanese) that describe in detail the project.
The previous situation was indeed a bit on the deteriorating side,
an old Master management plan for the whole park is reported in this( 25 pages pdf). It was evidently before Tokyo won the bid for 2020, not a mention about this renovation.
My previous post.