Apartment/Condo-for-Rent Owners, Landlords, Property Managers...

Feel free to comment on your experiences as landlords. Any tips for someone thinking of starting a small one? (Apart from having the right location/neighborhood. That can't be helped because the lot is already available.)

Ilang percent ng rent revenue ang napupunta sa expenses? Madalas bang mabakante ang units?

What are the worse things that have happened in the business?

Thanks!