I kept one of these at similar temperatures in my office and I didn’t have health issues with it. These bloom from the old spikes so it’ll often have a green spike present even when it’s not ready to bloom. As others have said, look for bud development off of that spike in the summer. I was getting one or two flowers a season from mine, but I brought it home last fall where conditions are warmer so I’m hoping it’ll be more floriferous in the future.