void Main()
{
    //CultureInfo.GetCultures( CultureTypes.InstalledWin32Cultures).Dump();
    var culture = CultureInfo.GetCultureInfo("ar-MA");

    var data = new List<Hotel>()
    {
        new Hotel() {Name= "1", HotelCity = "A".GetHashCode().ToString(culture)},
        new Hotel() {Name= "2", HotelCity = "A".GetHashCode().ToString(culture)},
        new Hotel() {Name= "3", HotelCity = "B".GetHashCode().ToString(culture)},
        new Hotel() {Name= "4", HotelCity = "C".GetHashCode().ToString(culture)},
        new Hotel() {Name= "5", HotelCity = "B".GetHashCode().ToString(culture)}
    };

    Console.WriteLine("Data:");
    data.ForEach(d => Console.WriteLine($"{d.Name}: {d.HotelCity}"));

    var hotels = data.Select(d => d);
    var city = "B".GetHashCode().ToString(CultureInfo.InvariantCulture);

    Console.WriteLine();
    Console.WriteLine("Matches:");
    hotels = hotels.Where(h => h.HotelCity == city);
    hotels.ToList().ForEach(d => Console.WriteLine($"{d.Name}: {d.HotelCity}"));
}

class Hotel
{
    public string Name { get; set; }
    public string HotelCity { get; set; }
}