The trolley is in the corridor.

1. First of all, the corridor is a part of the building and belongs to the public area, not the private space. Therefore, trolleys cannot be parked in the corridor, which will affect traffic and use.

2. Secondly, parking the trolley in the corridor will cause security risks. If someone comes out from upstairs or downstairs carelessly or in a hurry, they will bump into the trolley, resulting in injury or property damage.

Finally, parking the trolley in the corridor will affect the overall image and appearance of the property. This will have a negative impact on the price and rent of the property.