How to Deal With a Negative Relationship

My husband's family jumps at the opportunity to spend as much time with us as possible. One trip home, my husband and I slept separately for a week because he felt an intense obligation to spend evenings with his parents. My husband is reluctant to address these issues head on; he feels that since we don't see them often, why bring up the negative when we do see them? "Frustrated Daughter-in-law" would counsel the two of them about how they should handle this situation.