somewhere between Temasek (downtown, Suntec) and the Singapore American School (Woodlands, near the Malaysia,Johor immigration checkpoint), ie along any major highways - PIE (which cuts through the island of Singapore.
condo around Bukit Timah are lovely with huge boulevard roads and lush greenery e.g. Maplewoods, Arcadia.
Also, if you looking to shop, there are shopping centre, grocery and markets all around the area. I can also recommend extra activities for your kids.
sideways solicitation removed by moderator.
-Keat