Hired or volunteer (some awesome family member that's unheard of) housekeeper would really be a great option! I've looked around a bit a few months back and their rates are based on per square feet of your house. However, I did not dig deeper to know the numbers...not yet. Re the same anxiety of having a stranger in the house, you can actually specify the areas of the house you want cleaned, the day, and what time of the day. So you can stick around and watch tv while she scrubs. I've heard about cash-basis help who can come at $10 per hour referrals from friends. Or from agencies who charge a little higher. That's a ballpark. ;)
Right now, with the unpredictable economy, I've resolved to stick my regular housekeeping routine despite the extra delays. If it would help you get some perspective, read about it in my blog:
http://metrocottage.weebly.com/savvy-housekeeping.html
Enjoy!