Real Estate / Looking for real estate in Poland (away from the 'city') [11]

Hello,

I'm going to have business trip in Poland for 2+ months and want to rent an apartment (I will be in Lublin and Gdansk).
The point is that I need receipt from the owner of apartment to give a report to My company (like in hotels provided).

Company is providing hotel, but it is hard to live and eat in hotel 2+ months.

So kindly suggest how to proceed?

Thanks,
David