In three years your own bananas at home, in the meantime enjoy the tropics at home!
Bananas don't grow on trees, but on plants. The 'trunk' actually consists of an open stack of leaf remnants. Those large leaves mean that the plant quickly gives your interior a tropical impression. To get edible fruits you have to fertilize the flowers.
The banana plant should keep you nice and warm, in any case never colder than a degree or 12C. Make sure the soil is always moist. The leaves of the banana plant are vulnerable to snaps and tears. The plant can be placed in a light spot, but not directly in the sun.