Most piano teachers I know who have made a remarkable name in their industry hold classes in their studio, like Lita Zagala, Ryan Cayabyab and the likes. I can only suggest this piano tutorial home service I've come across while searching. It's named Piano Home Tutorial and according to their Facebook account, their instructors are either from UP Conservatory of Music or CEU Conservatory of Music. They said their instructors also have 15 to 20 years of teaching, so maybe they can be quite promising. You can check their account here https://www.facebook.com/pianohometutorial.com.ph/timeline