Do take a climb up the Marble Arch Mound

I know it goes against what the commentariat is saying, but the Marble Arch Mound is rather fun to visit.
Undeniably, the mound itself is not what was advertised – the art isn’t here, the cafe isn’t here, the shop isn’t here — the plants are 2-months from being at their best. The budget has been blown out of the water and tickets are now free until the end of the month.
But after all the fuss, what’s it like to climb up the Mound?
I know it goes against the Ap