Jillian
Cortina is out of the way, if you are going by train. While the Great Dolomite Road eventually leads to this Olympic site, the long bus ride will put you to sleep. South Tirol has a very active tourist board and many publications. If you want to stay inexpensively, try this website for farm vacations: www.roterhahn.it. Since South Tirol is German-speaking (for most) it will help you to know the bilingual names. A popular valley near train routes is the Grödnertal/Gardena and Kastelruth/Castelrotto is close to the tracks and yet very much in the center of the Dolomites. Brixen/Bressanone is just north and famous for its town center. Also consider staying in the capital of Bozen with its many accommodations. There isn't much on this RS forum or even tripadvisor.com, but you can find out prices and the huge array of lodgings on venere.com and similar hotel websites. Since I plan on visiting there next month, I have gathered the best reviews from different towns. Example: for Kastelruth, recommended is Pension Silbernagl ($60)