I went to kalpa in April 2015. I was trying to cover the kinnaur circuit via chitkul and than kapla. I started from delhi via shimla and reached sarahan. sarahan is a nice place to stay and the HPTDC hotel at sarahan is really good better than other HPTDC hotel. next day I went to chitkul but could not reach there because of snow. so same day I started for Kalpa. the kalpa is a nice place to stay.
There are no of hotels including HPTDC. I decided to witness the first ray of sun on kinnaur kailash from my hotel and it was amazing. the snow peak was looking yellow and orange. I recommend kalpa for family and friends. the place is accessible and also availability of accommodation which make this place viable throughout year.