diff --git a/ProjectHotel/ProjectHotel/Entities/Athlete.cs b/ProjectHotel/ProjectHotel/Entities/Athlete.cs
new file mode 100644
index 0000000..77ee676
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Entities/Athlete.cs
@@ -0,0 +1,27 @@
+using ProjectHotel.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Entities;
+
+public class Athlete
+{
+    public int Id { get; set; }
+    public string FirstName { get; private set; } = string.Empty;
+    public string LastName { get; private set; } = string.Empty;
+    public KindOfSport KindOfSport { get; private set; }
+    public static Athlete CreateEntity(int id, string first, string last, KindOfSport kindOfSport)
+    {
+        return new Athlete
+        {
+            Id = id,
+            FirstName = first ?? string.Empty,
+            LastName = last ?? string.Empty,
+            KindOfSport = kindOfSport
+        };
+    }
+
+}
diff --git a/ProjectHotel/ProjectHotel/Entities/Enums/KindOfSport.cs b/ProjectHotel/ProjectHotel/Entities/Enums/KindOfSport.cs
new file mode 100644
index 0000000..c179c78
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Entities/Enums/KindOfSport.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Entities.Enums
+{
+    public enum KindOfSport
+    {
+        None = 0,
+        Archery = 1,
+        Athletics = 2,
+        Badminton = 3,
+        Basketball = 4,
+        Boxing = 5,
+        Cycling = 6,
+        Fencing = 7,
+        Gymnastics = 8,
+        Rowing = 9,
+        Swimming = 10
+    }
+}
+
diff --git a/ProjectHotel/ProjectHotel/Entities/Hotel.cs b/ProjectHotel/ProjectHotel/Entities/Hotel.cs
new file mode 100644
index 0000000..de369fd
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Entities/Hotel.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Entities;
+
+public class Hotel
+{
+    public int Id { get; private set; }
+    public string HotelName { get; private set; } = string.Empty;
+    public string Adress { get; private set; } = string.Empty;
+    public int TotalRooms { get; private set; }
+    public int SingleRooms { get; private set; }
+    public int DoubleRooms { get; private set; }
+    public int TripleRooms { get; private set; }
+
+
+    public int AvailableSingleRooms { get; private set; }
+    public int AvailableDoubleRooms { get; private set; }
+    public int AvailableTripleRooms { get; private set; }
+
+
+    public static Hotel CreateEntity(int id, string hotelName, string adress, int totalRooms, int singleRooms, int doubleRooms, int tripleRooms,
+        int availableSingleRooms, int availableDoubleRooms, int availableTripleRooms)
+    {
+        return new Hotel
+        {
+            Id = id,
+            HotelName = hotelName,
+            TotalRooms = totalRooms,
+            Adress = adress,
+            SingleRooms = singleRooms,
+            DoubleRooms = doubleRooms,
+            TripleRooms = tripleRooms,
+            AvailableSingleRooms = availableSingleRooms,
+            AvailableDoubleRooms = availableDoubleRooms,
+            AvailableTripleRooms = tripleRooms
+
+        };
+    }
+}
diff --git a/ProjectHotel/ProjectHotel/Entities/PlacingAthlete.cs b/ProjectHotel/ProjectHotel/Entities/PlacingAthlete.cs
new file mode 100644
index 0000000..40c0dff
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Entities/PlacingAthlete.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Entities;
+
+public class PlacingAthlete
+{
+    public int Id { get; private set; }
+    public int AthleteId { get; private set;}
+    public int RoomId { get; private set; }
+    public DateTime PlacingDate { get; private set; }
+    public DateTime UnplacingDate { get; private set; }
+    public static PlacingAthlete CreateOpeartion(int id, int roomId, int athleteId, DateTime unplacing)
+    {
+        return new PlacingAthlete
+        {
+            Id = id,
+            AthleteId = athleteId,
+            RoomId = roomId,
+            PlacingDate = DateTime.Now,
+            UnplacingDate = unplacing,
+        };
+    }
+
+}
diff --git a/ProjectHotel/ProjectHotel/Entities/Rooms.cs b/ProjectHotel/ProjectHotel/Entities/Rooms.cs
new file mode 100644
index 0000000..9569030
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Entities/Rooms.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace ProjectHotel.Entities;
+
+public class Rooms
+{
+    public int Id { get; private set; }
+    public int HotelId { get; private set; }
+    public char RoomType { get; private set; }
+    public bool IsAvaiable { get; private set; }
+    public static Rooms CreateEntity(int id, int hotel, char type, bool avalible)
+    {
+        return new Rooms
+        {
+            Id = id,
+            HotelId = hotel,
+            RoomType = type,
+            IsAvaiable = avalible
+        };
+            
+    }
+}
+
diff --git a/ProjectHotel/ProjectHotel/Repositories/IAthleteRepository.cs b/ProjectHotel/ProjectHotel/Repositories/IAthleteRepository.cs
new file mode 100644
index 0000000..5eedd10
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Repositories/IAthleteRepository.cs
@@ -0,0 +1,17 @@
+using ProjectHotel.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Repositories;
+
+public interface IAthleteRepository
+{
+    IEnumerable<Athlete> ReadAthletes();
+    Athlete ReadAthleteById(int id);
+    void CreateAthlete(Athlete athlete);
+    void UpdateAthlete(Athlete athlete);
+    void DeleteAthlete(int id);
+}
diff --git a/ProjectHotel/ProjectHotel/Repositories/IHotelRepository.cs b/ProjectHotel/ProjectHotel/Repositories/IHotelRepository.cs
new file mode 100644
index 0000000..d523633
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Repositories/IHotelRepository.cs
@@ -0,0 +1,17 @@
+using ProjectHotel.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Repositories;
+
+public interface IHotelRepository
+{
+    IEnumerable<Hotel> ReadAthletes();
+    Athlete ReadHotelById(int id);
+    void CreateHotel(Hotel hotel);
+    void UpdateHotel(Hotel hotel);
+    void DeleteHotel(int id);
+}
diff --git a/ProjectHotel/ProjectHotel/Repositories/IPlacingRepository.cs b/ProjectHotel/ProjectHotel/Repositories/IPlacingRepository.cs
new file mode 100644
index 0000000..a0d31cd
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Repositories/IPlacingRepository.cs
@@ -0,0 +1,18 @@
+using ProjectHotel.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Repositories;
+
+public interface IPlacingRepository
+{
+    IEnumerable<PlacingAthlete> ReadPlacing();
+    PlacingAthlete ReadPlacingById(int id);
+    void CreateHotel(PlacingAthlete placing);
+    void UpdateHotel(PlacingAthlete placing);
+    void DeletePlacing(int id);
+}
+}
diff --git a/ProjectHotel/ProjectHotel/Repositories/IRoomRepository.cs b/ProjectHotel/ProjectHotel/Repositories/IRoomRepository.cs
new file mode 100644
index 0000000..f72d681
--- /dev/null
+++ b/ProjectHotel/ProjectHotel/Repositories/IRoomRepository.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ProjectHotel.Repositories
+{
+    internal interface IRoomRepository
+    {
+    }
+}