Noida investment: What really hurts post-possession

Been looking at Jaypee Krescent Homes for a while now, planning to buy as an investment. I'm based in Dubai, so can't do site visits easily. My main worry is construction quality. Suna hai post-possession bahut issues aate hain, like cracks ya seepage. Long-term rental value aur tenant retention pe kitna impact padta hai aise snags ka? Also, water supply reliability ka kya scene hai? Tanker pe depend karna padta hai ya society ka apna system theek hai? Elevator maintenance response time bhi important hai rental ke liye, koi experience share karega?