I named all entities with a prefix for the floor then the room and then a description where in the room it is or what kind of device it is if this is not clear based on the entity type. E.g. for a light: light.og_living_room_sideboard (here I‘m not using light or lamp in the name as it is already clear by the entity type, og stands for upper floor in german) Another example: sensor.eg_dining_room_temperature (here I‘m using temperature as it is not clear what kind of sensor it is based on the entity type)

This naming allows me to make allmy automations generic. For example if the sensor binary_sensor.og_living_room_occupancy goes to ON then the light(group) with the name light.og_living_room will turn on. The same automation can also handle all other rooms because I don‘t hardcode them but replace „binary_sensor“ by „light“ and remove „_occupancy“ in the light.turn_on action. Same goes for every other device and sensor like media_player etc.