There are any hostel/hotels in Qingyan Ancient Town?

Yes, many hotels and inns are in the town, such as Shoufu Inn in the East Gat, Guyun Hotel in 64 Neidong Street, and Jixiang Hotel beside Longquan Temple.

As for the taxi fare from Huaihua, I’m confused if you refer to Huaihua city, Hunan? If so, taxi is not recommended, since it’s really a long distance.
You are suggested to take a bullet train from Huaihua South to Guiyang North first, which takes about 100 minutes and CNY289 for a first class seat, CNY171.5 for a second one. After arrival, you can take a taxi to the town, which takes about CNY90-100.