What a shame ... maybe because they thought of you as dollars that's why they charge you that much. Not all Filipinos are like that... But how do you find Baguio?
By the way this February till March it's the flower festival. You could watch so many things like float parade, street dancing and many more. It's a grand festival... so if you have time you could visit baguio again! hehehe.
You know what? $300 is too much for a luxury room overnight.... I think with manor hotel, $100 you can stay for 2 days already. anyway, maybe they just asked you that much money for a tip! hehehe... It's just good that you're not the one who gave in.
