Picture posting is enabled for all :)
Do your other lotty neighbours use a raised bed method? I would take a look at other plots and see which ones work best and then follow suit! After all they will be tried and tested methods for that area and the old timers down there will have some good ideas.
My straw bale bed was filled mostly with horse manure and a layer of top soil. The squashes seemed to be very happy in there and we didn't experience any problems with mice or rats. Why would a straw raised bed attract mice and rats any more than a compost heap? My raised bed was built exactly like the one supersprout has shown except I had another two straw bales on the other side to make a closed rectangle rather than the open shape of supersprout's bed. :)