Airbnbs are nice to begin with, you can get a good apartment for 500-600 USD per month. My favourite co-working space was Acceler8 there which costed around $180 per month. Makati has most of the co-working spaces. Overall the WiFi is improving slowly here in Manila. Get a local sim at the airport and use Uber to move around.
Grab Car is a good alternative to Uber. Grab tends to have more drivers than Uber in Manila.