Hi,
We (self, son, daughter and son-in-law) did Kinabalu in 2001 whilst living in Singapore. We used a tour company, can't remember which one but it was all inclusive of accommodation, guides etc. We flew from Singapore to Kota Kinabalu then got taken to a sort of bunkhouse near the entrance to the Kinabalu National Park. The park entrance is at around 6000ft and the views from the roadside outside the bunkhouse were brilliant, 6000ft down to the valley below.
The next day we were driven to the park entrance to meet our guide. The first day involved walking up to a pesthouse at approx 10500ft in readiness for a pre-dawn start the following day. The sunset amongst towering cumulus cloud from the resthouse balcony was amazing and provided loads of great photos.
The next day, sort of, we got up for an early breakfast, 2.15am! then set off in the dark towards the summit. Still easy walking. Just before the summit the path crosses bare flattish rock and there is are rope to mark the route and/or hang onto (not necessary but many did).
We reached the summit for sunrise and have a photgraph of the 50km long shadow of Kinabalu across the Borneo countryside. The other spectacular sight is Low's Gully, 5000ft+ deep and forested where a party of British marines got lost some years ago.
No longer visible are the 'Donkey's Ears', a pair of pinnacles near the summit, one of the ears collapsed during a recent earthquake.
The descent, 7500ft is down in one go and I found this the hardest part, in fact I was scarcely able to walk the next day. (In Singapore we used to joke that people we saw limping along Orchard Road had probably just cone from Kinabalu.
The final night was spent in a luxury hotel in Kota Kinabalu (KK to it's friends, SE Asia loves acronyms!).
There is a slight chance of mild altitude sickness - both my daughter and son-in-law had it but my son and I were unaffected.
All in all it was a brilliant, unforgettable experience.
Hope this helps.
All in