Hi Gemma! I think the new name for it might be 'Jaz Mirabel Park' so you might have more luck with that in your search. It used to be sol y mar but must have changed hands. We are staying at the Jaz Mirabel Beach in July and we were sent a letter to let us know about the name change (it too started as Sol y mar mirabel beach!)
If you go to Tripadvisor, you should find some reviews there and the 'Beach' seems to come up better in them, although the Park has waterslides which I don't think the Beach yet has (although facilities can be shared).
Hope this makes sense! I'm a bit tired, hence the rambling!

Hi thanks so much for your reply. We did see the Jaz Mirabel Beach but thought it was a completely different hotel. A lady in my work is on holiday at the moment at the Jaz Mirabel Beach and she is home this week so I will ask her what she thought of it. Thanks for the reply, much appreciated