Hi mama! From your experience, nakita mo na na may shared rooms sila after surgery kaya I'd suggest calling East Avenue directly para malaman mo kung available na ba ngayon ang private rooms, baka may bagong arrangements na or upgraded options na pwede mong i-request. Regarding HMO, most government hospitals like East Avenue do accept HMO cards, pero mas safe talaga na i-confirm mo mismo sa billing or admissions department nila kung specific HMO plan mo ay covered pa rin, kasi minsan may changes sa coverage or requirements. A few of my mum friends dine-deliver na nila through private hospitals na more guaranteed ang private rooms, but kung gusto mo talaga ng East Avenue, best approach is direct call sa kanila para sa latest info about room options at HMO acceptance!