Did you have to retire due to health or other factors or could you have worked a bit longer to save a better nest egg?

you could have just paid off the house without retiring yet.

Good thing the house is paid. You can either sell it and buy a house further in the boondocks, reverse-mortgage it (not recommended), rent rooms, rent the whole shebang while you go see your extended family, exchange it for another house in Tuscany for two months and work part time to pay the trip, just work part time to pad up your pension, or a combination of those elements.