diff --git a/homeassistant/components/lamarzocco/button.py b/homeassistant/components/lamarzocco/button.py
index ae79e21897f..dabf01d817d 100644
--- a/homeassistant/components/lamarzocco/button.py
+++ b/homeassistant/components/lamarzocco/button.py
@@ -16,6 +16,7 @@ from .const import DOMAIN
 from .coordinator import LaMarzoccoConfigEntry, LaMarzoccoUpdateCoordinator
 from .entity import LaMarzoccoEntity, LaMarzoccoEntityDescription
 
+PARALLEL_UPDATES = 1
 BACKFLUSH_ENABLED_DURATION = 15
 
 
diff --git a/homeassistant/components/lamarzocco/coordinator.py b/homeassistant/components/lamarzocco/coordinator.py
index d7539fd9ca4..46a8e05745e 100644
--- a/homeassistant/components/lamarzocco/coordinator.py
+++ b/homeassistant/components/lamarzocco/coordinator.py
@@ -133,4 +133,6 @@ class LaMarzoccoUpdateCoordinator(DataUpdateCoordinator[None]):
             ) from ex
         except RequestNotSuccessful as ex:
             _LOGGER.debug(ex, exc_info=True)
-            raise UpdateFailed(f"Querying API failed. Error: {ex}") from ex
+            raise UpdateFailed(
+                translation_domain=DOMAIN, translation_key="api_error"
+            ) from ex
diff --git a/homeassistant/components/lamarzocco/number.py b/homeassistant/components/lamarzocco/number.py
index 825c5d6deb0..f32607fd73b 100644
--- a/homeassistant/components/lamarzocco/number.py
+++ b/homeassistant/components/lamarzocco/number.py
@@ -35,6 +35,8 @@ from .const import DOMAIN
 from .coordinator import LaMarzoccoConfigEntry, LaMarzoccoUpdateCoordinator
 from .entity import LaMarzoccoEntity, LaMarzoccoEntityDescription
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class LaMarzoccoNumberEntityDescription(
diff --git a/homeassistant/components/lamarzocco/quality_scale.yaml b/homeassistant/components/lamarzocco/quality_scale.yaml
index 59417143c21..3cea45539c9 100644
--- a/homeassistant/components/lamarzocco/quality_scale.yaml
+++ b/homeassistant/components/lamarzocco/quality_scale.yaml
@@ -42,7 +42,7 @@ rules:
     status: done
     comment: |
       Handled by coordinator.
-  parallel-updates: todo
+  parallel-updates: done
   reauthentication-flow: done
   test-coverage: done
 
@@ -69,7 +69,7 @@ rules:
   entity-device-class: done
   entity-disabled-by-default: done
   entity-translations: done
-  exception-translations: todo
+  exception-translations: done
   icon-translations: done
   reconfiguration-flow: done
   repair-issues: done
diff --git a/homeassistant/components/lamarzocco/select.py b/homeassistant/components/lamarzocco/select.py
index 1889ba38d6b..637ef935979 100644
--- a/homeassistant/components/lamarzocco/select.py
+++ b/homeassistant/components/lamarzocco/select.py
@@ -19,6 +19,8 @@ from .const import DOMAIN
 from .coordinator import LaMarzoccoConfigEntry
 from .entity import LaMarzoccoEntity, LaMarzoccoEntityDescription
 
+PARALLEL_UPDATES = 1
+
 STEAM_LEVEL_HA_TO_LM = {
     "1": SteamLevel.LEVEL_1,
     "2": SteamLevel.LEVEL_2,
diff --git a/homeassistant/components/lamarzocco/strings.json b/homeassistant/components/lamarzocco/strings.json
index a9784eadf9a..f98d5c2a700 100644
--- a/homeassistant/components/lamarzocco/strings.json
+++ b/homeassistant/components/lamarzocco/strings.json
@@ -199,6 +199,9 @@
     }
   },
   "exceptions": {
+    "api_error": {
+      "message": "Error while communicating with the API"
+    },
     "authentication_failed": {
       "message": "Authentication failed"
     },
diff --git a/homeassistant/components/lamarzocco/switch.py b/homeassistant/components/lamarzocco/switch.py
index 9f2598affae..4dc701c4c29 100644
--- a/homeassistant/components/lamarzocco/switch.py
+++ b/homeassistant/components/lamarzocco/switch.py
@@ -19,6 +19,8 @@ from .const import DOMAIN
 from .coordinator import LaMarzoccoConfigEntry, LaMarzoccoUpdateCoordinator
 from .entity import LaMarzoccoBaseEntity, LaMarzoccoEntity, LaMarzoccoEntityDescription
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class LaMarzoccoSwitchEntityDescription(
diff --git a/homeassistant/components/lamarzocco/update.py b/homeassistant/components/lamarzocco/update.py
index 371ff679bae..ca182909042 100644
--- a/homeassistant/components/lamarzocco/update.py
+++ b/homeassistant/components/lamarzocco/update.py
@@ -21,6 +21,8 @@ from .const import DOMAIN
 from .coordinator import LaMarzoccoConfigEntry
 from .entity import LaMarzoccoEntity, LaMarzoccoEntityDescription
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class LaMarzoccoUpdateEntityDescription(