Hello!
There are many resonably priced restaurants in Benalmadena, being in Arenal, You supposidaly will only want to go to Arroyo de la miel, if you dont want to go to far out! My favourite Restaurant in Arroyo De La Miel, has to be 'Millys' this is a restaurant, with resonable prices, and fantastic food, the restaurant is located;. (Take the right at the roundabout at the top of Arenal, heading towards Supermacado, continue until the Lidl store, and go ahead, until you come to the left turn to the train station, continue along, and it is on the right.) Also, after going past Lidl you will see a section of resaurants to the right (if you are going into Arroyo) these are worth a try, with many selections of cuisine; Italian, Argentinian etc. Once going past the train station, you will also come to another section of restaurants to the left. Beside the Burgerking, you will find a Chinese cuisine restaurant, this a must visit, offering 3 courses for approx. 5 euro! Luckily Arenal has a fantastic bus route that will bring you straight into the town. I also recommend heading out to eat at roughly 7:30, its a nice heat, and atmosphere in Arroyo at that time. I suggest heading down to the marina, in the morning, as it is fantastic for breakfast foods overlooking the Prominade! ie. it's not going to be too busy, so its worth visting once or twice during your visit!
Hope this helped,
Regards,
Jake Lewis