I'm using Postgres, the control panel could be more advanced, making account management and permissions easier for your databases. I can manage that myself via queries, but that's not as easy.
Also I'm experiencing some speed problems. Even though the database is in the same region on Google Cloud, as my kubernetes cluster is, my php responses take close to 1 second, where that locally is no more than 100ms. I'm not sure yet where the problem is as the Aiven dashboard is showing quick query responses. Further investigation required.