The Nagomi Visit community is very family friendly as we have host families with kids of various ages.

You can write in your request that you would like to be hosted by someone who has similar age kids. 

When sending a request include a saturday lunch date so more hosts with similar age kids will respond.

Sometimes availability might depend but nevertheless you will be able to check host profiles before booking so you will be able to confirm details about the host to see who you would be comfortable and interested in meeting with your kids.