Antara Noida vs. Gulmohar Estate: Overpaying for space?

Since January I've been trying to downsize after the kids moved out and maintaining this big house is killing me. Looking at Antara Noida Phase 1 and Gulmohar Estate, but honestly not sure which way to go. Antara's definitely more expensive, right? Like, crores vs lakhs... is it *really* worth it? Is the carpet area that much better to justify that price jump? Gulmohar Estate is showing a much lower price, but is it just a smaller flat, or are they cutting corners somewhere? Anyone actually living in either and can give me the real deal? Maintenance charges, hidden costs, the works. I'm on a fixed income, so wanna be careful. Don't want any nasty surprises later. Also, which one do you think is closer to hospitals? That's key for me now.