Looking for accommodation + advice

Hi I'm Edmond from Bulgaria, 24y old. I work in the IT Online Casino Gaming Development here in Sofia. I applied for a well payed job in Gibraltar Online Casino industry. Hopefully I will be approved and I'm considering moving to Gibraltar/Spain with my girlfriend to explore and experience different life. I'm mostly concerned about finding job for my girlfriend. I want to meet new people from all over the world and travel more in Europe in my spare time. We are looking for accomodation for a couple maybe 1-2 bedrooms in La Linea near the border price range 4-500e. I'm considering to drive my car to Spain it's about 3500km drive but I think it's worth it. Maybe I'll drive my car after I relocate and go back to Bulgaria to take my stuff with it. Do you have any advices for relocation/life there? Is the night life good in this part of Spain? Is it easy to meet people, despite the fact I will work an office job? Thanks !