I have visited this place severals times and everytime I visited I got a new layer of beauty and peace .When you will visit this place you will find yourself in the lap of Himalayan nature and beauty.it is located in Parvati valley.
You can easily visit this place by bus and taxi from Bhuntar or Kullu.There is a airport in Bhuntar but there is no railway track in Bhuntar .you have to come Chandigarh after that you have to take taxi or bus to Kasol or Bhuntar.
There are many local sightseeing places near Kasol which is also beautiful, elegant and picturesque like Tosh, manikarn, Kheerganga trek, Malana and plugha etc
Hotels and accommodations are really cheap in Kasol.You can find documentary bed in cafes in 100rs/- or 1 room for two in 350rs/-
Food is also good in Kasol as you can find plenty of Indian, Israelis, superman and German cafe and resturant in Kasol
Talking about safety is depends upon you.kasol have low crime but due to extreme nature .You will have to aware about everything.
Hashish is famous in Kasol and it can be dangerous to you as its a crime to smoke hashish in Karol but deep valley allows you to enjoy under governments eye.