Using a selfhosted version behind a subdomain of one of my TLDs. Something to be aware of - it can't be hosted behind a specific URI if you plan to have other stuff hosted on the same web root path (like example.com/wallabag), it always needs it's own (sub)domain (wallabag.example.com).

Other than that, it works pretty well with most text-based content. I'm using it through the Android app occasionally, and while the app won't win any design awards, it serves it's purpose.