Asking financial Advice from Bulgarian folks

I’m from a third-world country, and I’ve recently signed a 6-month contract to work at a well-known resort in Varna, Bulgaria. The salary offered is decent compare to the salary from my Country which is approximately 90 Euros a month and it’s a good opportunity to settle myself financially. However, since my salary is less than 700 Euros, I’m concerned about managing my expenses wisely, especially because the cost of living ( which is provided by the company), particularly food, is much higher compared to my home country in Asia. I’d genuinely appreciate any advice on how to budget and spend my money carefully during my time there. First time abroad job opportunity here. That's why.