We like Czech cycling.
The road surfaces are smooth and drivers considerate.
My choice of route was happily v good, minor roads with little traffic (well, so far, not done all yet).
From the lakes we took the #396 via Rouchovany then #351 to Trebic, latter town has UNESCO Jewish quarter and fine Basilica, worth a look. Also a brewery that does good food.
From Trebic continue on #351 over BIG hills! But quiet and a bit of shade helped. At Polna we turned off via Slapanov to Havlickuv Brod.
The scenery is nice, fields of barley and pine woods,; all v empty.