Are the tours everyday (Sun - Sat)? Do they have guided tours throughout the day or only once a day?

One tour at 10 AM every day except Sunday. Call and make a reservation in advance there are limited slots.

There are guides, but you can go around your self as well.

I don't know his operating hours. I do know that he lives there. We have had a guided tour in the past. It is very informal.

One tour a day.