Yeah, the little flowers are beautiful in the spring.
I have a small ficus bonsai as well and it didn't seem to mind a little heat and sun when I had it outside, but I've had it inside for the last two months, near a window, and it seems to be doing well there too. I got it from a nursery in town and it had been cut back too far, the remnants of the main trunk are about an inch in diameter but all of the budding limbs are new growths as of this year.