[lucgommans]

More than 200 hotels already on this website. Wouldn't this be much more useful as an OpenStreetMap tag so people can find and share these good/bad hotels in whatever front-end they like?

There does not seem to be a tag for it yet. That there are apparently hundreds of instances, and it being definitely something you'd want to select for, makes me think it's a good fit for OSM. Currently, hotels can already have tags like phone number, reception opening hours, WiFi fees, etc. It might even be a good fit for the toilets:* namespace, since this has overlap with toilets in (semi-)public spaces offering different levels of privacy

[Stevvo]

You can't put affiliate links in OSM tags.

[crazygringo]

The list doesn't seem to be accurate. I looked at a few and found zero evidence of missing bathroom doors in reviews or photos. One even had a review complaining the bathroom door was broken and not closing fully... indicating it is actually there.

[lucgommans]

The website has no open data license so this isn't usable for OSM, even if we wanted to. I just meant to propose collaborating on an existing platform where we already have a lot of data about physical features, rather than erecting an ephemeral platform for this special purpose