If in doubt go directly to the official Netflix website using your browser, where you should be able to log in and reset your password. Do not click on any links in the email, just in case it's a phishing email with links to a fake website.
As others have already said though if you logged in on your laptop whilst abroad that's quite likely what has triggered this email. Netflix will probably have detected the non-UK IP address used by the hotel resort.
"Listen, we've all got something to bring to this conversation, but from now on what I think you should bring is silence." - Rimmer