Same house I live in now, but we'd remodel a lot and hire some staff. I'd improve the home theater and upgrade the kitchen, buy better furniture, and have the yard landscaped. Sounds crazy, but I'd put a bbq table and vent in the dining room so we could have restaurant level indoor Japanese/Korean bbq. Then we'd have a housekeeper come once a week to clean and someone to keep the yard pretty.
Or maybe we'd sell this place and move closer to my kids in a more rural town in Oregon. I don't think I'd want to maintain a second home, but I'd be gone a lot to Alaska, Wyoming, and New England.