Hi,
we fly there regularly with light jets and I find operations there easy and straightforward. They have quite some traffic (low-cost carriers) during holiday times.
GA is handled by the airport operator (
General Aviation | Aeroporto Brescia ) quickly and efficiently, the staff is very nice and helpful. No AVGAS!
For our jet, we pay around 1/4 of what we would pay in Verona or Venezia, but I don't know what they charge for a piston single.