This Ackee Self entry focuses on running the privacy-oriented analytics service yourself. A replacement should be tested with a small site and a realistic deployment: install, configure the tracking endpoint, back up data, upgrade, and restore after a failed update.
Check how visitor information is collected, stored, and retained under your privacy requirements. Confirm that ad blockers or restrictive browsers do not produce misleading assumptions about traffic. Compare the work of maintaining the service as well as its dashboard. Self-hosting offers control, but that control only helps if someone can recover the service and explain the data it collects.