Torrevieja is a touristic town near Alicante in the South-East of Spain.
In Autumn the town is very quiet compared to the summer months, however the weather should still be warm and you can enjoy the sunshine in the beaches and even a good swim.
Other things that you can do is to have a nice long walk in the seaside promenades or visit the Museum of the Sea and the Salt or other temporary exhibitions displayed in the local galleries.
Gastronomy is also very good in the area, some personal favourites are:


-Restaurante El Muelle, try eating in the terrace in the promenade if the weather is nice, it's an italian restaurant but they cook meat really well
http://www.restaurante-elmuelle.com

-Restaurante Bahia, good restaurant for fish and seafood
http://www.tripadvisor.co.uk/Restaurant_Review-g187527-d993935-Reviews-Bahia-Torrevieja_Costa_Blanca_Alicante_Province_Valencian_Country.html

-Good places for authentic tapas in the city centre are:
Rincon de las Jarras
http://es-es.facebook.com/pages/El-rincón-de-las-jarras/102955156419310?sk=infov
and
Bar Las Cañas
http://www.tripadvisor.co.uk/Restaurant_Review-g187527-d1842172-Reviews-Las_Canas-Torrevieja_Costa_Blanca_Alicante_Province_Valencian_Country.html

-Restaurante Barlovento, a good restaurant for fish and seafood, you can try 'Caldero', a traditional rice dish
http://www.restaurantebarlovento.com/comollegar.php

-In Plaza Villamartin, near la Zenia, you can find a good number of bars and restaurants serving british and international food
http://www.villamartingolf.org.uk/Villamartin_Plaza.html

If you have a car and fancy visiting other places near Torrevieja you can find
-Benidorm (Terra Mitica Park is open on weekends)
http://www.terramiticapark.com

-Elche (Elx) and The Palm Tree Gardens
http://www.huertodelcura.com/jardines/home.php

-Alicante

-the beautiful town of Altea
http://es.wikipedia.org/wiki/Altea_(Alicante)

-Murcia
http://www.turismodemurcia.es/index.php?lang=en

-and the Mar Menor,which is a great place for beach and water sports