My Lovelace dashboard was filled with thermostats for each floor. It made a mess of presentation and wasn’t very WAF.
The solution to a more simple layout was the combination of conditional card and stack-in-card.
The result is a more dynamic card, taking a lot less space.
Thermostat used is the simple-thermostat.
Thinking of using the same setup for more parts of my Lovelace dashboard and doing a typical spring cleaning.

Pre conditional:
Post conditional:

Lovelace code:

cards:
  - cards:
      - entities:
          - entity: input_boolean.card_1st_floor_climate_living_room
            icon: mdi:sofa
            name: Living room
            show_state: true
            tap_action:
              action: toggle
              service: homeassistant.toggle
          - entity: input_boolean.card_1st_floor_climate_office
            icon: mdi:chair-rolling
            name: Office
            show_state: true
            tap_action:
              action: toggle
              service: homeassistant.toggle
          - entity: input_boolean.card_1st_floor_climate_hallway
            icon: mdi:door-sliding
            name: Hallway
            show_state: true
            tap_action:
              action: toggle
              service: homeassistant.toggle
          - entity: input_boolean.card_1st_floor_climate_bathroom
            icon: mdi:shower
            name: Bathroom
            show_state: true
            tap_action:
              action: toggle
              service: homeassistant.toggle
        title: 1st floor clima
        type: glance
    type: vertical-stack
  - cards:
      - card:
          entity: climate.living_room_thermostat
          header:
            icon: mdi:sofa
          layout:
            mode:
              names: false
              icons: true
              headings: false
            step: row
          control:
            - hvac
          type: custom:simple-thermostat
        conditions:
          - entity: input_boolean.card_1st_floor_climate_living_room
            state: 'on'
        type: conditional
    type: vertical-stack
  - cards:
      - card:
          entity: climate.office_thermostat
          header:
            icon: mdi:chair-rolling
          layout:
            mode:
              names: false
              icons: true
              headings: false
            step: row
          control:
            - hvac
          type: custom:simple-thermostat
        conditions:
          - entity: input_boolean.card_1st_floor_climate_office
            state: 'on'
        type: conditional
    type: vertical-stack
  - cards:
      - card:
          entity: climate.hallway_thermostat
          header:
            icon: mdi:door-sliding
          layout:
            mode:
              names: false
              icons: true
              headings: false
            step: row
          control:
            - hvac
          type: custom:simple-thermostat
        conditions:
          - entity: input_boolean.card_1st_floor_climate_hallway
            state: 'on'
        type: conditional
    type: vertical-stack
  - cards:
      - card:
          entity: climate.bathroom_thermostat
          header:
            icon: mdi:shower
          layout:
            mode:
              names: false
              icons: true
              headings: false
            step: row
          control:
            - hvac
          type: custom:simple-thermostat
        conditions:
          - entity: input_boolean.card_1st_floor_climate_bathroom
            state: 'on'
        type: conditional
    type: vertical-stack
type: custom:stack-in-card
style: |
  ha-card {
    border-radius: 15px;
    --card-background-color: rgba(255, 255, 255, 0.6)
  }

Input boolean:

card_1st_floor_climate_living_room:
name: Living room climate
initial: off
card_1st_floor_climate_office:
name: Office climate
initial: off
card_1st_floor_climate_hallway:
name: Hallway climate
initial: off
card_1st_floor_climate_bathroom:
name: Bathroom climate
initial: off