late arrival = long immigration queues, but fast transfer time. if you want to crash out and not go very far, Al Qasr (or related properties wins everytime.
Have heard nice things about Kempinski, as excellent for being right on the mall, not sure about pool there though, it is all suite hotel, and easy to get a cab from.
Was in Gros House for 10 days ending last week.. the construction sites are closing in and make this a noisy place through the night hours.. i threw a strop and got an apartment, but my group was spending over 50 room nights.. i'd avoid this one to be honest for a few years, which is a shame as service is good, but sleepless nights.. urgh
The new wing at the Royal Mirage.. heard it is excellent. But the Palm construction is right in front of the hotel and is a blot on the landscape.
It you want something different, go to Bab Al Shams, the desert resort.. inland and remote and quiet and away from all the construction and commercial crasness.. nice desert retreat for a short stay, got a spa, then head back.. sounds best option to me.
do let us know how it went.