- Quiet. It must have *quiet* - no barking dogs, ambulance sirens, or car alarms!
- Bug proof! Well sealed with no creepy critters!
- Be in good shape! My current house is ~50 years old, and I have learned... not only am I not handy, I have zero interest in finding people to fix things. It stresses me out. And *everything* needs fixing.
- Safe from scary people!
- Close enough to interesting things (hiking, but also museums and theaters and restaurants) that it's not a big deal to get out and do things

OMG... I am becoming so much more practical as I age. OK, fun stuff:
- I want one of those little glass enclosed rooms at the top of the house, with a comfy mat on the floor, so you can turn out the lights and stare through the walls and watch the stars... with no bugs of course!
- I'd love at least one big bay window with seating to curl up and read.
- If it were stone, and resembled a castle, I wouldn't complain.