I don't know if this exactly fits into this slot but never mind.
A week ago I paid a visit to the Galata Church in the Troodos (one of the Unesco ones), as it was the only one conviniently reachable by public transport. I was very disappointed to discover there were very few frescoes left on its walls, that the church was barely lit and that the access to the apsis where most of the frescoes were was limited to the priest alone. I would have skipped this one had I known how unappealing it would be. So please, if you undertake a visit to a site not worth the effort don't forget to mention it in your reviews. People tend to avoid negative reviews but actually I would find them as interesting and certainly helpful! Maybe it might even make sense to dedicate some space specifically for critical reviews.