Heh: "You have not really visited Bratislava until you have traveled by a public bus, trolleybus or tram."
"Because the prices and conditions are changing relatively often, it is always good to check them on the unofficial site for public urban transport in Bratislava, www.imhd.sk. This is also the place to find the best connection at any time of the day between two places in the Slovak capital city."
TA