The location of the apartment is great but there was extremely loud construction in the hallway of the building for the first two days of my stay. The construction started at 8:00 am and went through the afternoon. You couldn't stay in the apartment during the construction it was so loud. (They were either replacing or fixing the tile floor in the hallway.) I would have moved out of the apartment, but I couldn't find anything close by last minute and when the contractors said they would be done in two days, I decided to stick it out.
One other smaller issue was the king size beds are nice but there was only a twin comforter on the king size beds which didn't work very well. The host didn't have any king size comforters, so she brought an additional twin comforter which worked ok but her response to this was, "this isn't a hotel..." Not exactly what I want to hear from the host during a vacation rental.
Lastly, I don't watch much TV when I'm on vacation but the main TV in the living room is very old and seems to have an issue as all the people are blue on the screen. (It wasn't just a color setting -- I tried to adjust.)