Over the threshold I'm at 55 kt, but with me in the plane it just seems to glide like a Steinway at that speed.
Something so far not mentioned... where your idle speed rpms is set, all warmed up, has a big effect on your air speed for approach to land, with the throttle pulled back to idle. Make sure it's set at 1650 rpm or slightly under, throttle off, fully warmed up, on the 912 ULS model, I believe, per the manual.
As with any airplane, it is imperative to fly a stabilized approach. That means consistently on-speed, on-glide path, and on-heading – every time and every flight.