Actually you could do much better than that at todays interest rate and exchange rates..100K @ 6.75% would produce P45,000 a month tax free.

If you could make even 20k from your resort thats 65k PHP per month..
Not too shabby!
There are some pretty good ways to increase that amount by investing a small proportion of your 100K (lets say 10K) in a rural bank deposit which would produce 20%.
These are 5 year time deposits interest paid monthly.
(no more than 250,000 in any one acc as this is the max coverage for governments PDIC insurance)
However that aside..P65,000 in the province should = a pretty reasonable standard of living for most.