Interesting that you both opt for Europa...
As for me, I have two possible locations, both of which are in the Saturn system. First is Enceladus: sitting a house on top of one of the planet's geysers gives me free drinking water and, since it's very much like Europa, there could be complex organic life to culture and consume. Plus, I could convert the water into oxygen to breathe.
Second is Titan. As well as having an atmosphere (which is a big plus), building a houseboat means that I am literally sitting on quadrillions of barrels of oil. I bring along a couple of space-going tankers and surface rigs, export the oil to the nations of Earth for fuel/plastics/whatever and I live the rest of my life in fabulous wealth.







