Merusri Serene: 3BHK layouts family ke liye sahi hain kya?

Budget finalised, loan pre-approved – ab Merusri Serene dekh rahe hain. Need at least a 3BHK for my growing family. Kids ke liye space aur safety important hai. Jo floor plans dikha rahe hain, kya unka carpet area actually good hai? Pata chala ki paper pe bada lagta hai but usable space kam hai. Has anyone moved in? How's the actual layout for a family?