Sector 71: Daily life realities for seniors?

Resale of our old house is almost done, and now we need to finalize a flat in Sector 71. Kids have moved out, so don't need such a big place anymore. We're looking for a manageable 2BHK. How are the hospitals nearby, like Kailash or Max? Are they easily accessible, especially for emergencies? Also, what's the RWA like? I've heard some societies have crazy maintenance charges, is that true here? Plus, is it a walker-friendly area with good parks? We really want peaceful living. Any seniors living there, what's your take?