13 kilometers from Kuala Lumpur, this area is very convenient for short weekend climbing. You can take a flight from Singapore on friday night and climb saturday and sunday morning and come back in the evening to singapore.
How to get there from Kuala Lumpur ? The best way is to rent a car at the airport and drive there. The traffic is not that bad.
Where to sleep ? we rented air B&B near to the Batu Cave but still in KL so short drive but also close to the restaurants and bar for the after climbing.
What is the climbing level ? I would say you have a bit of everything for everyone ! Batu caves have many walls (5 in total) and each of them have around 20 routes and more. It starts from 5c till 7++
Multi pitch ? Yes but it is definitely not the area to go if you want to do multi pitch. There is one good and safe in the main wall. After you have some other in the other walls but they are not that well maitain and they are difficult to find.
Additionnal points ? yes there are sanitaries where you can have a shower (cold water but convenient) and only 1$ ! Useful if you are taking a flight right after.