Someone who has experience in programming C sharp

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


public class Client
{
public string Name { get; set; }
public long CreditCard { get; set; }
public List<Reservation> Reservations { get; set; }

}
public class VIPClient : Client
{
public int VIPNumber { get; set; }
public int VIPPoints { get; set; }

}


public class Reservation
{
public DateTime Date { get; set; }
public int Occupants { get; set; }
public bool isCurrent { get; set; }
public Client client { get; set; }
public Room room { get; set; }
}

public class Room
{
public string Number { get; set; }
public int Capacity { get; set; }
public bool Occupied { get; set; }
public List<Reservation> Reservations;
}

public class PremiumRoom : Room
{
public string AdditionalAmenities { get; set; }
public int VIPValue { get; set; }
}

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

public string Address { get; set; }

public List<Room> Rooms { get; set; }

public List<Client> Clients { get; set; }

public List<Reservation> Reservations { get; set; }
}

class Program
{
static void Main(string[] args)
{
}
}

Anyone can review this code bid please
Budget 10$