I saw like you did that kids under 17 can stay in the room with bedshare, so I booked it for two adults similar to you. My question is, once you arrived to check in, did you inform them that you had kids with you, and if so were they recognized? Or did you just not say anything?
From photos, looks like the two-bed rooms are sized at least like our full/doubles if not larger correct? Should be fine with our kids (a little older than yours, but still small.)