Yeah, a glassed in balcony (a "sun room") but it doesn't get all that much sun.
The gf has a bunch of other stuff growing in there, but all low-light stuff, and even then there's a tendency to etiolation.
(I have a peyote cactus that a guy I used to work with gave to me, that's grafted onto a San Juan...had it for maybe a year and it's already got 4 pups...crazy.)