We bought a flat in Concorde Manhattans and moved in Feb 2012. It was a little difficult at fist; but we kind of expected it since we have the experience of moving 4 apartments in the last 6 years with reputed builders. I agree that most of the negative comments posted on mouthshut about Manhattans would have been true till July-August 2012. But since then, it has been pretty decent over here! The amenities/facilities are typically above average. We get 24x7 water supply; albeit from tankers.
We have 2 lifts operational all through the day/night. The maintenance staff respond and correct your issues, but they need 2-3 calls per day to remind them, and they typically turn up in the evening if you start calling in the morning! The apartment below mine had seepage issues initially, but they did a decent rectification by drilling, water proofing and reconstructing the bathroom tiles in my apartment which was causing the seepage issue in the apartment below. I have seen worse seepage issues in better/reputed builders on Sarjapur road where I have lived!
All in all - I would give a 4 star rating to this project. The construction quality is really good (no cracks on walls!). Seepage issues are because of bad plumbing and can be corrected. In terms of value for money, it would get a 5 star rating as other projects like Ajmera are costlier and have the same kind of issues like Manhattans. This is the closest apartment complex to the office location of eCity (Wipro/Infy/HCL/HP); so flats here get rented out very very fast compared to other projects on Neeladri road.
Me and my family are generally happy with our apartment in Concorde Manhattans