While ordinary tap water here is drinkable, the apartment is fitted with a reverse osmosis water filtration system so that drinking water is always on tap, literally.
The system is plumbed in under the sink, and needs no attention from guests, but is serviced one a year to make sure it continues to provide good drinking water.
And to get the drinking water there is a little tap to the right hand side of the sink.
Before your arrival we all have run the tap for a short while to remove any standing water in the machine. However you may want to run it for a minute or two as well, just in case we were a little previous before your arrival.
It isn't everyone's cup of tea. And if it's not to your taste, bottled water is readily available in all the local supermarkets.