looking for apt st thomas

HI
My family and I are making our way down there on Oct. 26.
My husband has a job in sales and will also be doing construction.
We are looking for a small place for us. ( Read inexpensive as we get situated)
We have four kids ranging in age from 6 months to 10 years
We have been living and travelling for the past two months in a RV so a 1 bedroom will seem huge.
We are more like the partridge family than ken kesey and the Merry pranksters.
We do not smoke, drink or do drugs. Yet we are not some weird, denim wearing religious zealots.
We also are happy to do a work exchange. My husband has worked in the construction industry for over 15 years and built our house in CO.