not sure where "one" came from, there are many of them around portland, concentrated in problem areas. there is typically poop and needles around the toilets (which also have sharps containers that are emptied regularly), and neighboring businesses still get hit fairly heavily.

anecdote time: i had one a block from where i was living, and a block from a grocery store - while checking out, a very desperate person charged up complaining that the grocery store bathroom had been locked for too long. trying to be helpful, I mention the portland loo a block away only to be yelled at by the complainant. it was then that i figured out that the desire for the restroom wasn't for bodily waste elimination (portland loo's have a timer to stop drug use and prostitution in them).

as an aside, the portland loo's are some of the cleanest and best maintained public restrooms i've used - when given the choice between a "standard" restroom and a portland loo, such as on the waterfront, i choose the loo.