Greater Noida builders don't negotiate for real

Loan pre-approved for a 2BHK in Greater Noida West, ab bas deal final karni hai. Builder quotes ₹95L for a 2BHK in Krishna Vatika, Sector 119. I tried negotiating, but they seem pretty firm. Honestly, kitna negotiation possible hai yahaan? Like 5-7% off the quoted price? My broker says it's easy but I'm not seeing it. Plus, suna hai possession ke time bohot hidden charges aate hain. Maintenance, club fees, electricity connection... kya kya expect karoon? I'm an investor, so total cost is key. Any real tips to save money here?