diff --git a/src/chatelet-app/App.vue b/src/chatelet-app/App.vue
index b98cf17..359d50f 100644
--- a/src/chatelet-app/App.vue
+++ b/src/chatelet-app/App.vue
@@ -15,7 +15,7 @@ const { isAuthenticated } = useAuth()
 // auth-gated the same way events gates My tickets: ghosted when logged out,
 // and a tap explains instead of bouncing to /login.
 const tabs = computed<BottomTab[]>(() => [
-  { name: 'Rooms', icon: BedDouble, path: '/chatelet' },
+  { name: 'Rooms', icon: BedDouble, path: '/' },
   {
     name: 'My bookings',
     icon: CalendarCheck,
@@ -34,6 +34,10 @@ const tabs = computed<BottomTab[]>(() => [
 ])
 
 function isActive(path: string): boolean {
+  // "/" is the Rooms tab: active on the room list and any room detail
+  // ("/:id"). A prefix test would match every route, so key off the route
+  // name instead.
+  if (path === '/') return route.name === 'chatelet' || route.name === 'chatelet-detail'
   return route.path === path || route.path.startsWith(path + '/')
 }
 </script>
diff --git a/src/chatelet-app/app.ts b/src/chatelet-app/app.ts
index 13a76af..da735a4 100644
--- a/src/chatelet-app/app.ts
+++ b/src/chatelet-app/app.ts
@@ -39,7 +39,8 @@ export async function createAppInstance() {
   const router = createRouter({
     history: createWebHistory(import.meta.env.BASE_URL),
     routes: [
-      { path: '/', redirect: '/chatelet' },
+      // "/" is the room list (chatelet module route). No redirect: the
+      // standalone's base path already scopes every route under it.
       {
         path: '/login',
         name: 'login',
diff --git a/src/modules/chatelet/index.ts b/src/modules/chatelet/index.ts
index f71e445..0c6fd69 100644
--- a/src/modules/chatelet/index.ts
+++ b/src/modules/chatelet/index.ts
@@ -17,7 +17,11 @@ export const chateletModule = createModulePlugin({
 
   routes: [
     {
-      path: '/chatelet',
+      // Root-relative: the standalone mounts under a base path (Vite base,
+      // e.g. "/chatelet/") that the router already applies, so hardcoding
+      // "/chatelet" here double-prefixed every URL ("/chatelet/chatelet/…")
+      // and made deep links / refreshes fall back to the list.
+      path: '/',
       name: 'chatelet',
       component: () => import('./views/ChateletPage.vue'),
       meta: {
@@ -26,14 +30,14 @@ export const chateletModule = createModulePlugin({
       },
     },
     {
-      path: '/chatelet/:id',
+      path: '/:id',
       name: 'chatelet-detail',
       component: () => import('./views/ChateletDetailPage.vue'),
       meta: { title: 'Room', requiresAuth: false },
     },
     {
-      // Mirrors events' /my-tickets; kept off /chatelet/* so it never
-      // collides with the :id room route.
+      // Mirrors events' /my-tickets. A static path, so it ranks above the
+      // "/:id" room route and never resolves as a room id.
       path: '/my-bookings',
       name: 'chatelet-my-bookings',
       component: () => import('./views/MyBookingsPage.vue'),
diff --git a/src/modules/chatelet/views/ChateletPage.vue b/src/modules/chatelet/views/ChateletPage.vue
index 04418ff..cbe2202 100644
--- a/src/modules/chatelet/views/ChateletPage.vue
+++ b/src/modules/chatelet/views/ChateletPage.vue
@@ -14,7 +14,7 @@ const { rooms, isLoading, loadRooms } = useChatelet()
 onMounted(loadRooms)
 
 function open(id: string) {
-  router.push(`/chatelet/${id}`)
+  router.push(`/${id}`)
 }
 
 function priceLabel(r: Room): string {
diff --git a/src/modules/chatelet/views/MyBookingsPage.vue b/src/modules/chatelet/views/MyBookingsPage.vue
index 8dfbc36..8eea28f 100644
--- a/src/modules/chatelet/views/MyBookingsPage.vue
+++ b/src/modules/chatelet/views/MyBookingsPage.vue
@@ -76,7 +76,7 @@ function statusBadge(b: GuestBooking): { label: string; variant: BadgeVariant }
           {{ group.title }}
         </h2>
         <Card v-for="b in group.items" :key="b.id" class="overflow-hidden">
-          <RouterLink :to="`/chatelet/${b.room_id}`" class="flex gap-3">
+          <RouterLink :to="`/${b.room_id}`" class="flex gap-3">
             <img
               v-if="roomImage(b.room_id)"
               :src="roomImage(b.room_id)"
@@ -113,7 +113,7 @@ function statusBadge(b: GuestBooking): { label: string; variant: BadgeVariant }
         <CalendarCheck class="mx-auto h-10 w-10 text-muted-foreground" />
         <p class="text-muted-foreground">No bookings yet.</p>
         <Button as-child variant="outline">
-          <RouterLink to="/chatelet">Browse rooms</RouterLink>
+          <RouterLink to="/">Browse rooms</RouterLink>
         </Button>
       </div>
     </template>