Do toilets in European hotels provide toilet paper?

Provide toilet paper. Including public toilets.

Toilets may not be provided, depending on the hotel level you are staying at. Generally provide more than 3 stars. Cheap ones may not be provided, or the quality provided is relatively poor.

The voltage is 220 volts, but the shape of the plug is different, so it is necessary to prepare an adapter, and it is best to buy it in China, because Europe is very expensive.