A general comment on the weather: July is wintertime in Mauritius. This means certainly not the big heat. Daytime temperature in the coastal regions are in the mid to end 20s, evening temperatur can be fairly cool. So it would not be a bad idea to bring a sweater or jacket to wear for dinner. Clearly the best time to go to Mauritius is between October and December. So if you want to spend a lot of money, I would suggest to travel later in the year (if possible).
Also, in July the weather is normally better on the west coast rather than the east coast. However, since the hotels you are considering are far north and south, I would think that you could expect a fair amount of wind as well. The wind can make it a bit unpleasant sometimes (which you can have all around the island this time though).
I hope this helps.
Don't Drink and Navigate! &
don't type ;-)
Also - wenn Sie DAS Lesen können brauchen Sie keine Brille .......