The phrase "warm bath" refers to a warm, soothing experience or situation. It can be interpreted in different ways depending on context but generally it suggests comfort and relaxation. For example, taking a long, hot shower could be described as taking a "warm bath," because the water is soothing and helps one unwind after a stressful day. In another sense, a warm bath could refer to an environment or situation that makes someone feel comfortable, safe, and at ease.