Mar 26, 2012 - 10:18 AM
I've never been there, but passed Flims by train some times, so I know the area of the Rheinschlucht is impressive.
From the centre of Flims to lake Cauma is about 2 km. and from Flims to Restaurant Conn about 3.5 km (distances in straight line!).
You can walk this distance in about one hour and you will pass along Lake Couma. From Restaurant Conn to Il Spir Observation Platform will be about a 5 minutes walk.
As far as I can see on my maps it's quite an easy walk. I don't know whether there will be an entrance fee at Il Spir.
I hope this helps.