I've used this for self hosting contacts and calendar for many years now and it had been very low maintenance and good. Shared calendar with SO, synced across all devices. I even copy/paste pics of many contacts to have little icons and stuff in the db. Love it.
Same for me, it was basically set&forget. I recently added the InfCloud integration, which basically is a webclient for caldav/carddav, hosted within the radicale instance, which is very nice if you want to check things without your device.
