The point here is that I never decided for Google Cloud Platform. The win here comes from the Firebase side.

For every single MVP, Firebase is the way to go. Always. And Firebase is made over Google Cloud Platform.

So, I could say that we are using Google Cloud Platform but just with a nicer UI, called Firebase.

For some things, like Cloud Scheduling, Billing, Advance Configurations, etc, I have to use Google Cloud Platform, but usually with Firebase is enough.