Yes, that's about the temperature range I have, except during the summer time, which was basically the whole time this plant has been around my apartment, day temp went up as high as 90 or sometimes more, and the night would stay quite warm but then I can't sleep at night, so I used A/C to bring the temperature down to around 72 or lower.
It's possible that your plant is just one of those runts that are unwilling to flower.
I had to toss Susan Fender 'Cinnamon Stick' that grew and grew but never flowered for me.
Then again, give it away and who knows it'll change its mind? then you can really tell if it was the condition you gave or the plant itself, given that the next owner is able to provide the conditions your plant accepts of course.