I have only visited one maternal hospital Baptist (to visit a friend) few years ago and it was big compared to Canossa. I think I don't need a BIG hospital. Canossa is relatively small and that's why it is a lot quieter which is NICE!!! Exactly what we need, don't we?! Location is not really that inconvenient... don't forget you can effectively jump into a TAXI and get everywhere here. And, they have shuttle bus (very frequent) taking you down to Admiralty.
As I said at the end of my first post, some people has had bad experience, which cannot be taken as a generalisation. Take St. Paul's hospital for example, I have heard super good comments on it, but I've also heard dreadful comment. Sometimes we have to admit we might be 'unluckly' to meet some unfriendly staff or have some 'medical accident' in hospital. I can only tell you from my own experience and my experience with Canossa was NICE, except that 'strict' nurse! I had natural delivery and the nurses in the labour room are amazingly supportive and caring. It was my first pregnancy and without them I would certainly have gone into panic for sure. If you have heard someone else said something different from my experience, well, I am not going to argue/justify, instead I would just say "I am lucky". And to answer your question, I have not yet heard of any bad stories about deliveries. Good luck with your choice!