Añadido html y css de la navegación, faltan las rutas

angular/RestClient/src/app/navigation/navigation.component.css

+nav {
+    background-color: #333;
+    color: white;
+    padding: 1em;
+  }
+  
+  ul {
+    list-style: none;
+    padding: 0;
+    display: flex;
+  }
+  
+  li {
+    margin-right: 20px;
+  }
+  
+  a {
+    color: white;
+    text-decoration: none;
+  }
+  
+  a:hover {
+    text-decoration: underline;
+  }
+  
+  .active {
+    font-weight: bold;
+  }
+  
\ No newline at end of file

angular/RestClient/src/app/navigation/navigation.component.html

+<nav>
+    <ul>
+      <li><a routerLink="/hotels" routerLinkActive="Hoteles">Home</a></li>
+      <li><a routerLink="/about" routerLinkActive="active">About</a></li>
+    </ul>
+  </nav>
+  
\ No newline at end of file

angular/RestClient/src/app/navigation/navigation.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { NavigationComponent } from './navigation.component';
+
+describe('NavigationComponent', () => {
+  let component: NavigationComponent;
+  let fixture: ComponentFixture<NavigationComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [NavigationComponent]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(NavigationComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

angular/RestClient/src/app/navigation/navigation.component.ts

+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-navigation',
+  standalone: true,
+  imports: [],
+  templateUrl: './navigation.component.html',
+  styleUrl: './navigation.component.css'
+})
+export class NavigationComponent {
+
+}