diff --git a/backend/src/main/java/bg/kidsground/domain/AgeGroup.java b/backend/src/main/java/bg/kidsground/domain/AgeGroup.java
index 4b1d0a9..f1fcc16 100644
--- a/backend/src/main/java/bg/kidsground/domain/AgeGroup.java
+++ b/backend/src/main/java/bg/kidsground/domain/AgeGroup.java
@@ -1,5 +1,7 @@
 package bg.kidsground.domain;
 
+import com.fasterxml.jackson.annotation.JsonValue;
+
 public enum AgeGroup {
 
     ZERO_TO_THREE("zero_to_three"),
@@ -12,4 +14,9 @@ public enum AgeGroup {
     AgeGroup(String value) {
         this.value = value;
     }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
 }
diff --git a/backend/src/main/java/bg/kidsground/domain/Environment.java b/backend/src/main/java/bg/kidsground/domain/Environment.java
index f914195..ad0433c 100644
--- a/backend/src/main/java/bg/kidsground/domain/Environment.java
+++ b/backend/src/main/java/bg/kidsground/domain/Environment.java
@@ -1,5 +1,7 @@
 package bg.kidsground.domain;
 
+import com.fasterxml.jackson.annotation.JsonValue;
+
 public enum Environment {
 
     BOULEVARD("boulevard"),
@@ -11,4 +13,9 @@ public enum Environment {
     Environment(final String value){
         this.value = value;
     }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
 }
diff --git a/backend/src/main/java/bg/kidsground/domain/FloorType.java b/backend/src/main/java/bg/kidsground/domain/FloorType.java
index 90c1faa..fb44406 100644
--- a/backend/src/main/java/bg/kidsground/domain/FloorType.java
+++ b/backend/src/main/java/bg/kidsground/domain/FloorType.java
@@ -1,5 +1,7 @@
 package bg.kidsground.domain;
 
+import com.fasterxml.jackson.annotation.JsonValue;
+
 public enum FloorType {
     ASPHALT("asphalt"),
     GRASS("grass"),
@@ -12,4 +14,9 @@ public enum FloorType {
     FloorType(String value) {
         this.value = value;
     }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
 }
diff --git a/backend/src/main/java/bg/kidsground/domain/Playground.java b/backend/src/main/java/bg/kidsground/domain/Playground.java
index ec5d411..ad314ec 100644
--- a/backend/src/main/java/bg/kidsground/domain/Playground.java
+++ b/backend/src/main/java/bg/kidsground/domain/Playground.java
@@ -35,39 +35,30 @@ public class Playground {
     private FloorType floorType;
 
     @JsonProperty("shade_type")
+    @Enumerated(EnumType.STRING)
     private ShadeType shadeType;
 
     @JsonProperty("environment")
-    private String environment;
+    @Enumerated(EnumType.STRING)
+    private Environment environment;
 
     @JsonProperty("transport")
+    @ElementCollection
     private List<String> transport;
 
     @JsonProperty("toys")
+    @ElementCollection
     private List<String> toys;
 
     @JsonProperty("facilities")
+    @ElementCollection
     private List<String> facilities;
 
     @JsonProperty("image_links")
+    @ElementCollection
     private List<String> imageLinks;
 
     @JsonProperty("coordinates")
     private Coordinates coordinates;
 
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
 }
diff --git a/backend/src/main/java/bg/kidsground/domain/ShadeType.java b/backend/src/main/java/bg/kidsground/domain/ShadeType.java
index d41f027..5113ef1 100644
--- a/backend/src/main/java/bg/kidsground/domain/ShadeType.java
+++ b/backend/src/main/java/bg/kidsground/domain/ShadeType.java
@@ -1,5 +1,7 @@
 package bg.kidsground.domain;
 
+import com.fasterxml.jackson.annotation.JsonValue;
+
 public enum ShadeType {
 
     TREES("trees"),
@@ -11,4 +13,9 @@ public enum ShadeType {
     ShadeType(String value) {
         this.value = value;
     }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
 }
diff --git a/backend/src/test/java/bg/kidsground/controller/PlaygroundControllerTest.java b/backend/src/test/java/bg/kidsground/controller/PlaygroundControllerTest.java
index 00a08d7..57d76ef 100644
--- a/backend/src/test/java/bg/kidsground/controller/PlaygroundControllerTest.java
+++ b/backend/src/test/java/bg/kidsground/controller/PlaygroundControllerTest.java
@@ -1,7 +1,12 @@
 package bg.kidsground.controller;
 
 import bg.kidsground.constants.AppRestEndpoints;
+import bg.kidsground.domain.AgeGroup;
+import bg.kidsground.domain.Coordinates;
+import bg.kidsground.domain.Environment;
+import bg.kidsground.domain.FloorType;
 import bg.kidsground.domain.Playground;
+import bg.kidsground.domain.ShadeType;
 import bg.kidsground.service.PlaygroundService;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.BeforeEach;
@@ -13,6 +18,7 @@
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 
+import java.util.List;
 import java.util.NoSuchElementException;
 
 import static org.mockito.ArgumentMatchers.any;
@@ -39,8 +45,9 @@ void setUp() {
 
     @Test
     public void testSavePlayground() throws Exception {
-        Playground playground = new Playground(); // You need to create a Playground object here with appropriate data
+        Playground playground = new Playground();
         playground.setName("Test Playground");
+        playground.setAgeGroup(AgeGroup.THREE_TO_SIX);
         ObjectMapper objectMapper = new ObjectMapper();
         String playgroundJson = objectMapper.writeValueAsString(playground);
 
@@ -59,6 +66,15 @@ public void testGetPlaygroundById() throws Exception {
         Playground playground = new Playground(); // You need to create a Playground object here with appropriate data
         playground.setId(id);
         playground.setName(name);
+        playground.setAgeGroup(AgeGroup.THREE_TO_SIX);
+        playground.setCoordinates(Coordinates.builder().latitude(10.2).longitude(20.1).build());
+        playground.setFacilities(List.of("пързалка", "люлка"));
+        playground.setFloorType(FloorType.RUBBER);
+        playground.setEnvironment(Environment.APARTMENTS);
+        playground.setHasFence(true);
+        playground.setToys(List.of("конче"));
+        playground.setImageLinks(List.of("https://example.com/image"));
+        playground.setShadeType(ShadeType.TREES);
 
         when(playgroundService.getById(id)).thenReturn(playground);
 
@@ -66,7 +82,18 @@ public void testGetPlaygroundById() throws Exception {
                 .andExpect(status().isOk())
                 .andExpect(content().contentType(MediaType.APPLICATION_JSON))
                 .andExpect(jsonPath("$.id").value(id))
-                .andExpect(jsonPath("$.name").value(name));
+                .andExpect(jsonPath("$.name").value(name))
+                .andExpect(jsonPath("$.age_group").value("three_to_six"))
+                .andExpect(jsonPath("$.coordinates.lat").value(10.2))
+                .andExpect(jsonPath("$.coordinates.lng").value(20.1))
+                .andExpect(jsonPath("$.facilities[0]").value("пързалка"))
+                .andExpect(jsonPath("$.facilities[1]").value("люлка"))
+                .andExpect(jsonPath("$.toys[0]").value("конче"))
+                .andExpect(jsonPath("$.image_links").value("https://example.com/image"))
+                .andExpect(jsonPath("$.floor_type").value("rubber"))
+                .andExpect(jsonPath("$.shade_type").value("trees"))
+                .andExpect(jsonPath("$.has_fence").value(true))
+                .andExpect(jsonPath("$.environment").value("apartments"));
 
         verify(playgroundService).getById(id);
     }