I visited here a few weeks ago and I think it was bad timing because there was still snow melting, leaf-less trees, and a cloudy sky. I walked up to the view point which only took a couple of minutes and I had very high expectations. Unfortunately it was shot down due what I mentioned above. I think the best time to visit this place is the fall because the trees will be different colors and it will really make the city view beautiful! The small hike up also would not be that slippery from ice/snow.
Parking was not bad at all. It was definitely full but you can get parking if you wait a couple minutes.
I also think it was disappointed because I have seen the city view in big cities like SFO, LA, NYC so Montreal was definitely a smaller one and shouldn't be used to compare. It is definitely a must see if you're touring Montreal!