Hi Marjal Gym/Spa, it has an indoor swimming pool, and a very warm spa area - you can pay for a session to enter on the day. You will need to bring with you flipflops to wear around the pool area, also compulsory is a swimming hat, which you can buy for 5e when there.
Go to the web site and then 'location' it will give you several route's - around 13-20 mins drive. They also have outside climbing frames etc. and you can sit with a coffee and watch her.
http://www.marjalcostablanca.com/en/the ... itness-spa.
I know she is only 5 years old, but I know our friends little one loved to try anything.
BOWLING - in Quesada and Torrevieja (Ozono) near Carrefour opens at 12 noon. (ask them to put the side up on the lane)
CRAZY GOLF - Quesada
BEACH - still very pleasant in the winter - bring your bucket & spade
Hope this helps - good luck