Looks as if N. ventrata has every one's confidence.
Oh nice thread you sent us to endparenthesis! Thanks for pointing out that was there.
So far I'm thinking N. rafflesiana, N. macfarlanei, N. sanguinea, N. maxima, N. truncata, and the most bombproof of them all... N. ventrata. Need to do a little bit more research now. Looks as if this it totally doable in an all white bathroom with high ceilings, high humidity, and lots of mirrors. If orchids will make it in there, these should too. Tee he, big huge jacuzzi tub for 4 in that room that we can fill up with water and let sit. Geesh, we rarely use it anyway so might as well get some use out of it. That ought to raise the relative humidity in there!