I booked for a 1600 sq ft, 3 BR apartment at CeeDeeYes Chennai Pattinam recently under their ROI scheme in which you can lease the apt to them for 3 years, and get the entire amount of 16000/month upfront adjusted from the cost of the apartment (Rs.2400/sq ft).  (I understand they have closed this scheme now!)  The apartment is quite spacious (as you can expect from 1600 sq ft), has 3 bathrooms, 3 balconies, and piped gas connection; the price includes a reserved car park under stilts and all other costs including Registration.  CP is a self contained, gated township that is 8 km from Old Mahabalipuram Road, ~9 km from Thiruporur bus stand on OMR.  It is a ~12 minutes drive from OMR.
It is also connected to the GST Road on the other side, to Gudivanchery at ~14 km.  In the first phase about 1000 apartments are ready to occupy (I am told 900 or so are sold out), and in all, there will be ~2500 apartments when the project is completed.  CP has a 1 lakh sq ft DAV school, a shopping mall, ATM (swimming pool, concrete roads, security...).  A bank branch, clubhouse, 3-4 screen multiplex, etc. will come up in due course.  Already about 100 families have moved in.  It is just about 20 km from SIPCOT that will be an important part of 'New Chennai'.  I am sure in the next few years this will develop into a thriving township.  Ceedeeyes would maintain the place lifelong (for Rs.1.5/sq ft at present).
I understand there has been quite a bit of delay in construction and some early customers are aggrieved.  Delays are not uncommon in large Projects, and the good thing is that Ceedeeyes have completed the first phase and given possession whereas several other big projects in Chennai are yet to do so.
Overall, I believe this place is good, and recommend buyers to have a look at it.
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