I am travelling from Milan, Italy to Zurich, Switzerland and would like to drive, but I'm not sure how difficult the drive would be. Would someone be able to describe what it's like - the terrain, road, bends and so on?
This is, for a 3+ hour drive, pretty much as easy as it can get.
It's a drive 100% over Italian and swiss highways. It is also pretty much one straight line north - on the same road, with only one single fork in the road. If you print out a google navigation beforehand and stick to the road, you basically cannot do anything wrong.
If you are willing for some sightseeing, a 1.5 hour detour and if the weather is nice, you might want to not go through the Gotthard tunnel but take the pass road instead. You can make 2 detours to the Lago di Lucendro and the Göscheneralp. Those are 2 really spectacular glacier lakes on top framed in high mountains.