Anyone set up LibreOffice online?

Most of my clients are using Office 365 but my most recent one is very paranoid about security and has asked me about alternatives to trusting your data to Microsoft.

Now, I've used LibreOffice personally for almost 20 years but it seems from looking at the project page of the 'Online' version, it's pretty clear it's not designed to be deployed in Enterprise environments.

I'm posting here as something of a Hail Mary in case any of you guys have had success in setting this up? It'd be great if there's an open source, private cloud solution like this but it seems TDF think it's not worth the trouble.

Look forward to hearing your thoughts.