We have a client in Coral Gables and are there frequently
Try Indigo Hotel - part of the Intercontinental Chain
South Miami Hotel – Hotel Indigo Miami Dadeland – Hotel in South Miami near Dadeland Mall & Miami Hospitals you will be about a 20 minute drive (greatly depending on traffic) to South Beach. Have not used the pool, so have not paid attention to it, but you could probably call and get a description of the facility to see if it meets your requirements. This location will be very close to Coral Gables and Coconut Grove.
In South Beach The Delano
South Beach Hotels: One of the Best Miami Hotels | Delano Hotel
is
quite fabulous