Finding a house as a starter

My partner and I are looking for a place to rent, as we currently live in a student studio, and we just have 7 more months before we need to move to another place. Of course the housing situation is very hard, and as we are just starters it's almost impossible to find something else (we have been looking for a year). We found a very nice place in Nijmegen, but it has some problems:

- It's 1750 euro a month for a two bedroom apartment. We could potentially pay that, but it would leave us in a very tight situation. We also think that it might be too expensive.

- The landlord wants to rent it to us for an undetermined period, starting one year, because she wants to live abroad and check how she feels, and if she wants to stay there or come back. This of course puts us in an uncertain position, as we don't know how much we can stay. Is this legal? Do we have any kind of protection against it?

- We have a planned trip from the end of may to august. We expressed that to the landlord, and she said that it was okay and we could rent from july onwards. Now she is saying that we can rent it, but only if we do it from the end of may. This is both very expensive and complicated, as we will be traveling during that time and then we would have to pay double rent.

We want the place, but it's hard to deal with the situation. We are afraid that if we negotiate too much she will just pick another candidate, as there are more other people interested. What can we do? Thanks in advance!