CALL 641-364-2014 or 319-269-8980 or 888-503-2294
Availability Calendars Link
If you would like to check the availability of specific dates, please use the following links. (The blue links will take you to flipkey.com--you do not need to book through flipkey, but you can use the calendars to check availability of any of the houses or you can cut and paste the addresses into your browser).
(Scroll down the page a bit when you get to FlipKey and you will see the calendars)
Grandma Z's: http://www.flipkey.com/alta-vista-vacation-rentals/p511726/