Group 1 - The core viewpoint of the article highlights the shift in homebuyers' priorities, with comfort in living conditions becoming the primary focus, leading to regrets among those who purchased middle corridor units [1] Group 2 - Middle corridor units are generally priced lower than corner units, offering better cost-performance ratios, allowing buyers to save money for renovations or furniture [4] - The layout of middle corridor units tends to be more rectangular, maximizing space utilization and facilitating easier decoration [6] - Middle corridor units are quieter due to being surrounded by other units, providing a more peaceful living environment [8] Group 3 - Regrets about moving into middle corridor units stem from safety concerns, particularly the risks associated with high corridors and inadequate protective barriers [10] - North-facing windows in middle corridor units often result in poor lighting due to obstruction from the corridor structure, affecting both light and ventilation [14] - Privacy issues arise as neighbors can easily see into kitchens and bathrooms, leading to discomfort for residents [18] - Common areas like corridors can become cluttered with personal items, creating safety hazards and reducing accessibility [24]