Swaraj Homes Dwarka: Friend's big decision

My friend is seriously considering Swaraj Homes' Sudarshan Apartments in Dwarka. I just moved into my own place (different builder) a few months back, and the hidden charges at possession were insane, things nobody told me. For Sudarshan Apartments, has anyone faced similar unexpected costs? Also, what's the construction quality like after a year or two – any finishing or seepage issues? And are post-possession maintenance charges reasonable there? First-hand experiences would be super helpful. Don't want my friend to regret it.