So far it's amazing.
It leverages Apollo for offline/GraphQL capabilities and Apache VTL to bind resources.
It also integrates really nicely with AWS Amplify.
One thing that was a bit of an annoyance was access levels.
You can authenticate with the GraphQL api using a Key, IAM or Cognito JWT
Key is for development only.
IAM does not expose Cognito Groups to VTL
JWT requires an active session.
So we had to create a "fake" account for non-signed in access.
Use case being, a "guest" can read data from the API but only "admins" can write data to the API