JuanPabloC

Planning a two-week trip to Sabah in Malaysian Borneo and I want to do some serious trekking. I have heard Mount Kinabalu is the obvious choice but I am also interested in the Maliau Basin and Danum Valley for wildlife. How physically demanding is Kinabalu? Do I need a guide for the other areas? And what is the best time of year to go? I have moderate hiking experience but I am not a serious mountaineer. Any advice from people who have trekked in Borneo would be great.