Cheltenham's postcode 3192 not 3191 (Sandringham)! important if you're looking at vacancy rates etc.
Good pockets are 'Beach side' of Nepean Hwy.
Close to train station, proximity to Southland, great primary school, DFO, Moorabbin Airport, Golf Courses, close to beach and abundance of private schools in next suburb of Mentone.
The only real bummer is access to freeways, if you're driving to the City it's a pain travelling up Nepean. Beach Rd these days is not much better.
Great location and there is a bit of development happening, especially with some new apartment buildings around Charman rd. Some nice size blocks on with older houses too.
If they ever end up putting that train station in at Southland, then the area boarded by Reserve Rd, Park Rd and Bay Rd should go really well. I think I read there is a big development going ahead off Jacks Rd and Reserve rd