There are many ways to have a good time, one of them is to go shopping, we always prefer to go to a shopping center.

I live in Rivas-Vaciamadrid and the shopping center that rule there is called H2ocio. It is the biggest building in the area and I would almost dare say the only one. And, that is the main reason why it is the most popular. Moreover, not only is the biggest but also is the only one with more than a hundred facilities and services of Rivas-Vaciamadrid. So you have everything you want in the same building within hand's reach.

Lastly, I would suggest opening inside of the shopping center expensive clothes shops just in case you may need something for a celebration or an important event. It would appear more comfortable if you do not have to travel to the capital, Madrid, to buy clothes for specific events.
Other than that, I do not imagine anything else to open there, this shopping center has almost everything you can think of.