Leaving bikes in Vienna

We (2) are in the middle of doing the EV6 a couple of weeks at a time. We will be arriving in Vienna late June and need to return to the U.S. until Sept. We are looking for somewhere (a garage, barn, outside under a tarp) to leave out bikes for a few months. They are not fancy or expensive so you don't have to worry about them, in fact you can use them if you take good care. Thanks.