San ka sa Makati bro? Depende kse pero madami dito.
About stacked washers and dryers, I think Maytag and Whirlpool has one. I just don't know where they sell them here in the Philippines. We bought our washer (Maytag) at Duty Free in 1991 (approx. can't remember exactly) and it still works fine. We also have a Whirlpool washer in our house in Mindanao (acquired 1995 approx. from the US) and it still works fine. Depende na lang sa yo for your brand preference. I heard European branded washers and dryers are now available here in the Philippines like Bosch (yes, they don't just make spark plugs! )
Sorry for the late reply sir! AFAIK, madami dyan sa area na yan especially around Salcedo and Legazpi. Try to drive around those areas. Usually laundromats are found the the ground floor of most residential condos in that area. Scout ka lang for a low price per kilo.