Not a specific name..but book a hotel before you go there...its season time and yes they ask a lot money and cn't find any hotel or if u find one..charges are high...only suggestion is preplan you trip so u dnt feel harasse yourself..hope this help you..happy journey man
Look for a hotel in Barlowgunj or Landour. A little away from Mussoorie, so you'll get good hotels in good rates. Also great views, and peaceful than Mall Road.