Mine's a cold greenhouse, so yours should be fine
Some of the leaves die back (cut these off) but some stay green all though winter. I leave them in their pots and just put them back outside, and give them a feed, when it has warmed up. They don't have a bulb, just fleshy roots, so after a couple of years they need either a bigger pot, or splitting up and potting up separately.
I just water them when I remember, that means not very often
I think they're better off on the dry-side when it's cold though. Cold and soggy isn't a good combination for most plants...