Hi Jon, you won't be able to tap 110 from our power supply, 240 is as low as we go
Your idea of wiring a dedicated circuit and having a 110 volt transformer is most likely the best option, this will stop cross plugging of appliances. Most motels here have 110v shaver outlets and these would be ok for small things but they only have small transformers behind the plate and wouldn't be large enough for power tools.
You would have to work out what kind of current you will need and size the transformer to suit, plus add a bit for good measure. A lot of machinery comes here from overseas that is designed to run on 110 volts and they generally just use transformers. You should be able to source one somewhere, worst case is to get one wound to suit.
You will still have to find a local electrician though, I live on the other side of the country, I think traveling charges may be a little too high to get me over