theblueenigma: How much would are you considering letting it out for ?
I have some renovation work to do, so not certain at this point. Likely to be in the region of 1200zl month + utilities.
joarius: I'm wondering which heating option is the cheapest in Poland? Because I heard that electricity is expensive, is that right?
In general electric heating will be your most expensive option, but if you are disciplined about using 2nd tariff electricity, with a storage heater for example, you can keep the cost fairly competitive with gas. I wrote someting on this a few weeks back: