The Austrian Alps are best in late summer when the alpine lakes are finally warm enough to swim in and the hiking trails are clear of snow. You want a cabin near Hallstatt or the Zillertal valley to get that postcard view of jagged peaks reflected in turquoise water.
A trip like this usually runs around $2200 for flights and a nice rental. If you want to spread that cost out, the Citi Simplicity® Credit Card offers 0% for 18 months on purchases and balance transfers from date of account opening.
Remember that this 0% offer is a window, not a gift. If you have any balance left after 18 months, the card will start charging interest on whatever is still owed.