One-Bedrooms in the
DVC portfolio have various layouts with some crossover features. The main features you'll encounter are:
Dedicated Kitchen vs Galley Kitchen
(CCV, RIV, VDH, & POLY-2 in that latter category)
1.5 Bath vs 2 Full Bath
(AKV-Kidani, BLT, VGC, POLY-2 in the latter category)
Murphy Bed in Living Room vs Pull-Out Couch
(OKW, HHI, VB, BWV, AKL, BLT, VGC, CCV are in the latter category. I expect in 2 years, only OKW and VB will be without Murphy Beds)
Rooms that Sleep 5 vs 4
(AKL-Value & CCV in the latter category)
Rooms with recent updates vs Rooms needing refurbishment
(Subjective, but BWV, HHI, BLT, VGC, & AKL in the latter category)
Rooms that require more points to book vs Rooms that require fewer points to book
(OKW, SSR, BWV, AKL can be in the latter category depending on the booking category)
Room Views & Resort Location can play a role too in how you enjoy your room. My advice is to figure out which of these features (if any) are important to your family, which resort location works with your vacation preferences, and work outwards from there (dining, balcony views, etc).