Open the link and reload the page. Demo: https://frozen-harbor-32601.herokuapp.com/
For development, you will only need Node.js installed on your environement.
Node is really easy to install & now include NPM. You should be able to run the following command after the installation procedure below.
$ node --version v10.13.0
$ npm --version 6.4.1
$ git clone https://github.com/manusalgado/press-hotel.git
$ cd press-hotel
$ npm install
$ npm start