practice/practiceApplicaiton/RoomsPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="practiceApplicaiton.RoomsPage"
             Title="Комнаты">
    <Grid RowDefinitions="*,Auto" Padding="16" RowSpacing="10">

        <CollectionView Grid.Row="0" x:Name="RoomsList"
                        SelectionMode="Single" SelectionChanged="OnSelectionChanged">
            <CollectionView.ItemTemplate>
                <DataTemplate>
                    <Frame Margin="0,4" Padding="12" CornerRadius="8"
                           BackgroundColor="White" BorderColor="#E0E0E0">
                        <Grid ColumnDefinitions="Auto,*,Auto">
                            <!-- Номер комнаты -->
                            <Frame Grid.Column="0" BackgroundColor="#4472C4"
                                   CornerRadius="8" Padding="10,6" Margin="0,0,12,0">
                                <Label Text="{Binding RoomNumber}"
                                       TextColor="#E0E0E0" FontAttributes="Bold" FontSize="18"/>
                            </Frame>
                            <!-- Инфо -->
                            <VerticalStackLayout Grid.Column="1" Spacing="3">
                                <Label Text="{Binding TypeName}" TextColor="#4472C4"
                                       FontAttributes="Bold" FontSize="15"/>
                                <Label TextColor="#555">
                                    <Label.FormattedText>
                                        <FormattedString>
                                            <Span Text="Вместимость: " TextColor="#4472C4"/>
                                            <Span Text="{Binding Occupancy} " TextColor="#4472C4"/>
                                            <Span Text=" чел." TextColor="#4472C4"/>
                                        </FormattedString>
                                    </Label.FormattedText>
                                </Label>
                            </VerticalStackLayout>
                            <!-- Рейтинг -->
                            <VerticalStackLayout Grid.Column="2" HorizontalOptions="End">
                                
                                <Label Text="{Binding Rating, StringFormat='{0:F1}'}"
                                       FontAttributes="Bold" TextColor="#2E4057"
                                       HorizontalOptions="Center"/>
                            </VerticalStackLayout>
                        </Grid>
                    </Frame>
                </DataTemplate>
            </CollectionView.ItemTemplate>
        </CollectionView>

        <!-- Обновить рейтинг — доступно всем -->
        <Button Grid.Row="1" Text="Обновить рейтинг"
                BackgroundColor="#4472C4" TextColor="White" CornerRadius="8"
                x:Name="EditRatingButton" IsEnabled="False"
                Clicked="OnEditRatingClicked"/>
    </Grid>
</ContentPage>