The goal of this graduate work is to create a web application for hotel management. The idea is to make a single-page application using modern technologies that will allow hotel employees to easily access and exchange information important for the business of the hotel. Main goal is to create an app that will make it easier for the reception to manage reservations and guests, to enable the housekeeping to manage the work of maids and room cleaning, and for hotel administration to manage general settings and employees. The following technologies were used to create the web application: MySQL database to store all the information necessary for work, the Spring Boot program framework using Java programming language for the back-end (business logic, communication with the database, the "brain" of the application) and the React library using JavaScript programming language for the front-end (the interactive part of the application that the user sees, with an emphasis on ease of use and design).