Is it more of an adult type environmental or do kids normally really enjoy it here? Not sure whether to bring just my partner or my nieces as well.( They're only 5 and 7 )

I've been there several times and don't think a 5 and 7 yr old would enjoy touring the house. Unless they are into that at those ages.

Yes they will enjoy it

I'd say you could bring your kids. You could walk the grounds first, go check out water features and statues, then come back to the house. GREAT photo ops all around the grounds. Once you get to the house, just keep them closer. Expensive stuff inside.

Great place for all. They have a few rooms showing where the children sleep.

Thank you all for answering my question! And as much as I love taking my nieces with me every where I go, the 5 year old is a bit reckless and tends to be accident-prone. I think I'll check it out with my boyfriend first and take my nieces when they are a bit older and can appreciate it for what it's worth. Thanks again!