买房选楼层太高太低都不好，内行人专挑几层，原来好处多多！

Core Insights - The choice of floor in a residential building significantly impacts living experience, with specific floors being favored for their unique advantages [1][3]. Group 1: Preferred Floor Selection - A simple formula for selecting a floor is "total number of floors divided by two, plus one," which typically points to the middle-upper section of the building [3]. - Higher floors help avoid noise disturbances from nearby commercial areas, while lower floors may suffer from noise issues [3]. - Low floors can have poor lighting and drying conditions, while very high floors may experience excessive dust due to high air flow [5]. Group 2: Comfort and Convenience Balance - Another guideline suggests choosing floors that are above one-third and below two-thirds of the total number of floors, which generally provides good lighting and air circulation while avoiding humidity issues common in lower floors [7]. - These mid-range floors also offer convenience for daily commuting, making it manageable to walk up in case of elevator failure [7]. Group 3: Floors to Avoid - Top floors are prone to water leakage issues, especially if property management is inadequate, leading to potential long-term problems for residents [11]. - Waistline floors often have smaller window areas, resulting in reduced indoor lighting, and are at risk of water accumulation if waterproofing is not properly managed [11]. - Elevated ground floors, while perceived as a solution to dampness, can be colder due to lack of insulation from below, making them less comfortable than standard second floors [12].