My search for a compact flat led to Bignonia Towers

Honestly, my kids have moved out, and this big house is just too much. I'm considering St Patricks Central Park Bignonia Towers for a smaller 2BHK. I'm really keen on the carpet area efficiency; for a compact flat, is the usable space good, or does it feel cramped? Also, what's the society vibe like for older couples? Is it friendly or more isolated? And what are the real monthly maintenance charges? Don't want any hidden costs after moving.