This is both a marketing and lifestyle decision. For most busy people, there are only so many weekends in a month that they can disappear from home for five hours without falling behind on housework, yard work, or homework. You need to get people in the door and looking at the property, but too many open houses opening the doors every week or two smacks of desperation; too few, by contrast, may mean that you aren't bringing potential buyers through your doors. Find a happy medium; if you know the advisor's strategy on open houses in advance, you'll either be prepared to live with it later, or you will turn to an agent who is willing to follow the schedule you want to use.