Be careful with UAE weekend staycations, your first day is friday and this day is full of local guests and hotels are full of guests on day stay or night stays. AlMaha is this same on weekend difficult ask about late checkout, not possible to have early checkin.
My wife don't want go to JW Marquis, they have guests on quarantine or a lot of passengers from Emirates on one night stopover to high risk habe covid now.
I think GH will be good choice with Atlantis. Short distance between this two hotels.

Did you need covid test on fly back ?