I'll suggest you to visit Manila town (Almora district), or Mukteshwar. The reason behind is nowadays places like Kasol, manali, shimla, mussourie, nainital have become crowded and you won't get relaxed mentally. But in these two also I'll personally prefer you Manila coz this place is located at the hilltop and at night you can literally see different towns glaring from (Dwarahat to Nainital). For more details of place checkout my Manila photo Blog.