They have policies on the material used and how they are washed. Any decent hotel will be using industrial dish washing equipment with extremely hot steam after cleaning to kill all bacteria and germs. This also has the effect of kashering all the dishes. Way higher standard that what goes on in most kosher homes that don't kasher their dishes after every use.
Look at some photos
The not as decent hotels that only wash by hand would only use materials that follow ONLY the leniencies of well respected rabbis in Israel*. The Israeli rabbinut does not ever follow leniencies of rabbis outside of Israel. Sometimes products like Hagen Daaz are sunk in without meeting the standards of Israeli rabbis but then controversies always hits the newspapers about such incidents.
The Israeli rabbinut may be more lenient or stringent regarding certain materials than your community.
*E.g. no Israeli rabbi argued for chalav stam but Rabbi Tzvi Pesach Frank of the Edah held all milk powder was permitted. I believe the Chazan Ish disagreed and one of the recent Sephardic chief rabbis so even rabbinut stam only uses it with a disclaimer. All of this is worlds stricter than in C"L.
In Israel even the meikilim only follow the leniencies of great rabbis with a disclaimer. If there is not disclaimer then there is some consensus about the leniency and only then is it suited for the meikilim. Very holy people.
