Public Wi-Fi is not safe, many hackers are taking your information and your data.
Many business owners used Wi-Fi on Hotels, Coffe shops, and many other locations when traveling.
To protect yourself from hackers you should have a VPN connection to your office. Public Wi-Fi is not protective or unscripted.
Look what happen to thousands of hotels worldwide including Holiday Inn : https://krebsonsecurity.com/2017/02/intercontinental-confirms-breach-at-12-hotels/