My wife and I staid from Monday - Saturday. The place was bigger than expected. The front part of the apartment overlooks the main street of the Lastarria neighborhood. People watching is great from the living room.
It gets noisy as you would expect between 7pm - 12am with many street performers making music. I loved it!
The rear of the apartment where the bedrooms are is quiet with only distant sounds of music. I am a sensitive sleeper, but I slept well every night with the help of an aperol spritz 😉
I highly recommend this apartment, especially if you like to stay where the action is 😀