Have you lost your marbles?
Ha Ha! Not very helpful though!
Own goal MCP
It would work either way. Not everyone has the luxury of this choice. Depends on a lot of things like their ages, if you need a break for some reason from the kids/if you want to spend time with them. Marbella has plenty for kids to do for a week, extra costs, when you're going, etc. The hotel you have chosen seems to cater ok for kids. It on the beach!