While most of the website is open to anyone, we want to have the “club business” page accessible only to members.
If you only care to have one password with no user ID, take a look at Page Safe stack by Joe Workman. If you want more of user id and login, you will need to look at other options, but most hosts offer this in the CPanel.
Yes, set up a password protected folder on your host and save your page there.
Buy the Page Safe stack (+ some other stacks from Joe Workman for at least $50) on Monday and you will get a 50% discount. Page Safe is a way more elegant solution than a password protected folder and it will impress your client.