Personally, we wouldn't book a cabin above or below a public area, but the sound should go down, so I wouldn't worry too much about the noise in E724. Then, again, you may hear the bass from the club below you.
Taking 4 year old twins! More power to you! If they are potty trained they'll love being in the Fun Zone! Here's the link:
"A truly happy person is one who can enjoy the scenery on a detour."