Staying at the Sunway Resort Hotel & Spa, what do I take to go to the Kuala Lumpur city center?

There is a hop on hop off bus that does a circle around the City Centre. The ticket lasts for 24 hours so if you bought it at 11am then you can use it the next day until 11am. Well worth it. It stops at all the interesting places and runs each half hour so if you want a couple of hours around petrona towers then when you are ready just hop on the next Hop on hop off bus. It takes over an hour to do the circuit and you get a map of stopping places such as Little india or the gardens etc.