Agombars and the Kvikk Baron bar are both in a small section of Calle Eneas, almost on the junction of the CV898 (Carretera del Torrejón). From your apartment you can either walk down Calle de Zeus and find these places right at the end, or walk along Calle Baco and turn left at the end. I can't recommend these places as I haven't used them.
A few other places you might want to search out are The Mississippi Queen restaurant, which is shaped like an old paddle boat. From your apartment walk down to the Chinese restaurant Casa de Lu and then turn left. You will eventually get to a set of traffic lights before the N332 roundabout, turn right here. The Mississippi Queen is a short way along this road (Calle Morera).
On the way back it may be worth checking out to see if there is any entertainment in the terrace bar next to the Supervalu supermarket in Avenida de Torreblanca. There is a big sign for the supermarket but DO NOT buy any food there. It is usually rank.
From the beach that you will probably be using at the end of Avenida del Mar there is a popular walkway which will take you past the Buda Bar, through the natural park, and after about 15 minutes or so to La Mata. There are some nice bars right on the beach there.
It would be well worth getting a taxi for a visit to Meson Villa Salada, a link to there web page is
HERE. They often do cheap menus de los dias, along with entertainment on weekend lunchtimes.