Worth paying the price.
In short, if you're a British couple and struggling which hotel to choose, I'd strongly recommend Le Royal Meridien; Marina proximity, great beach access and good general location as well as being clean, tidy and having all of the usual 5 star facilities you'd expect. It is also home from home; women in bikinis, alcohol no issue etc. However, two things to consider; 1. be aware that at the weekend, there will be 'night club music noise' during the day and late into the night at the weekends from nearby beach clubs that are not part of the hotel - being in my 30's, I had no issue with this (the music was good!). 2. Definitely upgrade to the the Royal Club room because the access to the Royal Club Lounge is not to be underestimated; it pretty much turns your stay into an 'all food and drinks paid for during meal times', as well as offering a great room with a view and a private car to come and collect you from the airport - needed if new to Dubai. Dress appropriately for the club. Staff and service are great. I'll be going back.