I went to Kasol during on season so the guest house was quite expensive but still reasonable keeping in view the quality of the room. the room service was good, the washroom was clean and shining. The room was spacious and they provided mattresses so that we all could be accommodated in one room. we all want to have a good window view and we got quite lucky in this. there were two windows in the room, one had the view of the Parvati river and the other had the view of mountains.
The guest house also has tent accommodations which are available at cheaper rates than rooms and also more adventurous as they are just 50 metres away from the river .you will really get the feel of camping staying in these tents.
All in all I would say that I would again buy a room in this hotel only if I ever visit Kasol again.