if you have any common sense - which it seems you do - using craigslist shouldn't be a problem.
i moved into an apartment with complete strangers who found me (i placed an ad) on craigslist. i have everything i could want in an apartment and live with decent people.
for what it's worth - i had much better place an ad saying what i wanted/needed vs. weeding through the ads myself. with the latter, i did see some nice places, but ultimately after placing the ad, i had people coming to ME and saying, "this is what i have from the list of what you want." huge time-saver.