1, You want to save 1k to 1.5K USD, that's between 3 to 5K QAR, which is by long shot, will be offered to you as basic. So if you wanna save it, it means you don't and you won't spend anything, which again means that you won't eat anything.

2. For the accomodation, the best that you can have is shared one, meaning you'll live in a villa or flat with a room mate, meaning sharing one room.

3. Your 3rd request of multiple travel is what puzzles me? Do you really want to work here or just pass by and go home frequently? I think you're not serious. How long is travel time to Romania? I'm asking because when I was in Shanghai, China, I did go home 6 times, and the longest is one week but mostly Friday night to Monday morning schedule. It's a two hour flight so it's just like coming from the province. And I pay for my tickets.

So goodluck to you, actually, MANY GOODLUCK to you! You'll need it!