The Hall at Minster LovellA great place for hide and seek. Probably not a great place if you have small children who are not afraid of water.
I really like it here. It's a lovely spot for a picnic. It's picturesque, quiet and interesting. My kids enjoyed it here and spent ages running around the ruins. They really liked that you can see some stairs leading up to a tower but no way to get to the stairs as the lower half has been removed.
There is parking in Minster Lovell. It's up the road from the church. You can find this parking space on this map.
To get to the Minster, walk through the churchyard. It's behind the church.
You can find Minster Lovell on this map.
If you would like to find out more about the Minster, here's a link to its page on the English Heritage site.