You can add this to your outer Mandalay tour. If you want to save time, go by land instead of the river crossing. Then you can stop at Sagaing Hill on the way back plus Inwa and Amarapura. All can be covered in a day!
If you are allowed to climb up, it's very windy up there and the view is good, especially of the river. It's puzzling though that the temple chamber in the center is so small while the unfinished stupa is so huge.
There's a huge bell and another temple nearby to visit.