Hi hongxiongmao...
I had my son at the aforementioned Kunhua Hospital about 5 years ago.
Overall it was a good experience and I did not pay any hong bao, nor did I have a c-section pushed on me. The doctors were professional, although they did not speak English and the hospital was fairly typically Chinese — not particularly well organized, crowded, patients often left to fend for themselves (no one is going to bring you meals during your stay, for instance). The cost was extremely low. 5 years ago I paid less than 2000rmb for the birth itself, maybe 1000 more total for prenatal care, if that much.
PM me if you'd like more details.