[ios] Pass correct locale to GetHotelInfo.

iphone/Maps/Common/AppInfo.h

@@ -11,6 +11,7 @@
 @property(nonatomic, readonly) NSString * buildNumber;
 @property(nonatomic, readonly) NSUUID * advertisingId;
 @property(nonatomic, readonly) NSString * languageId;
+@property(nonatomic, readonly) NSString * twoLetterLanguageId;
 @property(nonatomic, readonly) NSDate * buildDate;
 @property(nonatomic, readonly) NSString * deviceName;
 @property(nonatomic, readonly) BOOL isMetalDriver;

iphone/Maps/Common/AppInfo.mm

@@ -198,6 +198,19 @@ NSDictionary * const kDeviceNamesWithMetalDriver = @{
   return languages.count == 0 ? nil : languages[0];
 }
 
+- (NSString *)twoLetterLanguageId
+{
+  NSString * languageId = self.languageId;
+  auto constexpr maxCodeLength = 2UL;
+  auto const length = languageId.length;
+  if (length > maxCodeLength)
+    languageId = [languageId substringToIndex:maxCodeLength];
+  else if (length < maxCodeLength)
+    languageId = @"en";
+
+  return languageId;
+}
+
 - (NSDate *)buildDate
 {
   if (!_buildDate)

iphone/Maps/UI/PlacePage/MWMPlacePageData.mm

@@ -171,7 +171,8 @@ using namespace place_page;
     if (auto const api = GetFramework().GetBookingApi(canUseNetwork))
     {
       string const hotelId = self.sponsoredId.UTF8String;
-      api->GetHotelInfo(hotelId, [[AppInfo sharedInfo] languageId].UTF8String, [hotelId, self](booking::HotelInfo const & hotelInfo)
+      api->GetHotelInfo(hotelId, [[AppInfo sharedInfo] twoLetterLanguageId].UTF8String,
+                        [hotelId, self](booking::HotelInfo const & hotelInfo)
       {
         if (hotelId != hotelInfo.m_hotelId)
           return;