This set of posts comes from Pastor Mark Driscoll and his wife Grace. The sermon series The Peasant Princess brought up dozens of questions that they felt they should respond to. The result is this blog series: Christian Sex: Frank Answers to Honest Questions.
Answer: Many wives feel more relaxed and focused on her husband away from home, so getting away now and then, even checking into a hotel for a few hours on date night, may be wise and helpful. There are always responsibilities (e.g., kids, chores) to tend to at home that can distract a woman and be difficult for her to ignore. To be more prepared for sex, a woman needs to think about her husband and intimacy throughout the day, but sometimes that can be resolved by getting away for a couple hours or overnight.