If they would prefer the Valley Ho, then you might have them sign up for sniqueaway. I signed up to receive their alerts a week or two ago and it consistently promotes a very inexpensive rate for the Valley Ho, but must be used on specific dates. Seeing your question, I jumped on their website to see what dates are available in February, however, presently they do not show the calendar out that far, so I am guessing you would have to wait until December to see that month's availability. I have not actually booked a room using this service yet, so I cannot guarantee that it works, but it does seem to have affiliations with very nice properties.
Being the high season, I would recommend them finding a reasonable alternative, with a liberal cancellation policy, and simply booking that room(s) in the event the Valley Ho is not availabe on their travel dates. If it is available at the special rate, then simply cancel their other rooms.
If you do use this site, please let me know how it worked out. Good Luck.