Show calendar with availability for service

Hello,

I am looking for an option to add a calendar where potential customers can see my availability for service (ie. when I'm available to hire for work). 

I've read about the option to create events in Squarespace that can be put into the calendar, but the downside is that this would need to be done manually.
I've also read about the option to integrate google calendar, but that isn't very appealing compared to the Squarespace estethics.
Then there's plug-ins, which might be an option, but some of them are paid (not neccesarily a problem, but free would be better in some cases), and there's a lot of them.

So:

I was wondering one knows other nice solutions to show my availability, so that when people fill out an inquiry form they can immediately see when I would be available or not.

8 minutes ago, TiffanyZ said:

I am looking for an option to add a calendar where potential customers can see my availability for service

Have you looked at Squarespace Scheduling? 

I am looking for this as well - to more specifically, link to my google calendar. I don't want people to have the ability to add themselves to my calendar, more-so just see available and unavailable days.