The apartment was very, very noisy due to the dinging warning bell of the train station going off every 15 mins, starting at 6am. There is little to no soundproofing so it was impossible to escape and I woke up as soon as it started in the morning. I got lucky on the weekend because there was track work, which meant I could get some sleep - but this would not always be the case!
I also was concerned about security because the door was a bit jammy and would sometimes open on its own in the wind. Privacy was also an issue because there was a gap in the blinds which meant people could see in.
The apartment also got very hot due to facing the sun in the afternoon. (But improved with the air conditioning on)
Besides these main concerns, the apartment was clean, nicely decorated and had a comfy bed. Overall I felt it was a bit too expensive for the value - as I could have got a hotel for a similar price that had better security and was quiet.