yup, maybe it is almost or negative cash flow, but how about after 30years? i means after finish paying the installment.

the property still belong to u, and u can "untung bersih" from the rental.
the rental in pj at that moment not only RM1200 anymore...
the rental keeps rise up today, somemore is the property in such "good location"

how many years left for the leasehold?
if less than 70 years, try to negotiate with the owner by this point...

above are my personal opinion, anymore info or opinion also can share...