Naomi,
Not that I want to prevent single women moving into Condado, however I think you will find there really isnt much to do, especially with regards to nightlife. The closest decent nightlife is in Murcia, but this can be costly in a taxi.
I can see the attraction of Condado for people with kids as they have a safe place to run wild, but as Lindaw164 says, try renting for a while and see what you think. You mentioned it was a bit like a "Posh Ghost Town", but its not really posh!