Kumrat is like a paradise on earth and one of the best places to visit in Pakistan. I have been once there and have a strong urge to go there again.
I would also strongly recommend all my friends here to visit, if they have not been there already. It is simply wonderful. Besides, I would also request to the visitors to keep the place clean, do not damage the nature there and try to be civilised, with locals as well as with fellow tourists.
I found this wonderful guide on Kumrat and also recommend to have a look at it.