Hi Jessebean,
yes, the birth centre down there is attached to the hospital, if you are super low risk then you should be eligible to birth there (I think it is a little different to the one up here in Launceston though). I know of a doula in Hobart who has a birth pool that she *might* hire out (I am not sure if she does or not). Otherwise, the baths in the birthing centre might be an option (though obviously not as good as a birth pool). I did see some very cheap birth pools for sale ($100) through a company that had a major flood in their warehouse, but they may already all be gone. Let me know if you are interested in their email or in the contact details for the doula in Hobart with the birthpool, I can pm either to you.
Good luck!