Pests, e-bike alarms, and pollution BUT convenient, good size units
Pros
The size was great for a couple who were working from home part time. Nice big windows. Hard to get more convenient than literally above the station.
Cons
In a year we had mice maybe 4 times. The air purifiers struggled to clean the air without super regular cleanings due to the traffic and the train station. Someone had an e-bike parked nearby that went off almost every time a train passed for weeks before we left.
Advice to the owners
Deep inspection of the unit to find where the mice are coming in. Better sealing of windows.