Yea, that rent would be brutal, it is probably more than I have budgted for a pretty nice house equipped with a good set of solar panels, a decent amount of furniture, full set of appliances, a pet, a full set of gaming equipment, and some other things.
Where you live is probably the largest of all the controllable costs, and if you are retired, you are certainly not tied down to particular area. It not only effects housing costs, but also insurance, utilities, food costs, and most of all, taxes. The room might be almost empty but it might as well be filled the brim with the most expensive stuff he could find, the key isn't removing a few pieces of stuff, it is making smart lifestyle choices. There are other nice areas to live that would cost 1/5 as much, within the US.