Our one, at 2 years and 2 months, has a very good routine where she HAS to be in bed at 7pm. Our whole daily routine from 6am onwards is based on this fact. Her naps and meals and playtime is worked according to this. She doesn't always fall asleep straight away, but is usually gone by 7:30 - 7:45.
My issue is not getting her to sleep (we walked a long road to get there by the way, it's only been easy the last 6 months or so). My problem is that she can be very restless and a light sleeper. She's usually ok for 2 nights of the week, for the rest one of us has to get up during the night for a bottle (having the hardest time getting her off it!), or something like a dummy that's behind her head (which she could, frankly, sort out herself).