Infirmary

When sleeping in a hospital you will gain hit points and mana at
twice the normal rate. While this amenity previously required a
noticeable payment, the Gods decreed that their servants shall
provide this service for free for the time being.

Hospital rooms are identifiable by the ( Infirmary ) flag in
their titles. Only Clerics, Rangers, and players between levels
1 and 15 can see this flag.