Core Insights - The article highlights the hidden challenges and risks associated with purchasing a top-floor apartment, particularly one with an attic space, which may initially seem appealing but can lead to significant issues over time [1][12]. Group 1: Water Leakage Issues - The first heavy rain revealed severe water leakage problems in the apartment, with water seeping through the walls due to a defective waterproof layer [2]. - A maintenance worker indicated that most top-floor apartments experience leakage issues, and the waterproof layer typically requires major repairs every 5-8 years, costing at least 5,000 yuan each time [2]. Group 2: Temperature Control Challenges - Top-floor apartments experience temperature extremes, with summer indoor temperatures being 3-5°C higher than middle floors, leading to over 30% increase in air conditioning costs, while winter temperatures are 2-3°C lower, resulting in a 25% increase in heating expenses [5]. Group 3: Water Pressure Problems - Residents on the top floor face significant water pressure issues, especially during peak usage times, making it difficult to use hot water without interruptions [6]. - Even with the installation of a pressure booster pump, the noise generated is disruptive, and the underlying design flaws in the building's water supply system remain unresolved [6]. Group 4: Elevator Delays - Top-floor residents experience longer wait times for elevators, averaging 40% more than those on lower floors, which can lead to significant inconvenience during peak hours [7]. - In cases of elevator malfunctions, the physical challenge of climbing multiple flights of stairs can be overwhelming for residents [7]. Group 5: Safety Concerns - There are significant safety concerns for top-floor residents regarding fire rescue operations, as most fire ladders can only reach up to 50 meters (approximately 15 floors), complicating evacuation during emergencies [9]. Group 6: Market Value Issues - After three months of living in the apartment, the owner found it difficult to sell the property, as top-floor units with attic spaces are often viewed unfavorably in the market, leading to longer selling times and lower prices [12]. - The article emphasizes that purchasing a home is not just about acquiring space but also about ensuring a quality living experience, advising caution when considering top-floor apartments [12][13].