I tried searching for matilda's house recently but I am quite sure its gone already with all the HDB developments going on around it.
Tanjong pagar swimming pool is actually called yan kit swimming pool. It's not quite open to the public but quite a nice place to shoot. SAF Golden rules applies. Below is my take on Yan Kit!
http://www.facebook.com/album.php?aid=242348&id=547890785
I recently heard of a place called Mitre hotel somewhere at Somerset but i am not sure if it's still around. Would definitely want to go there and shoot.
OCH is pretty much "refurbished" now with most of the rubbish cleared, walls repainted and more tightly guarded. The old mood isnt really there anymore for me.