Unfortunately, I cannot recommend this apartment. Based on the many positive reviews, it seems like our experience was an outlier but it was bad enough that I wouldn't wish it on anyone else.
When we arrived for check-in, we noticed an unpleasant smell but thought maybe it was from elsewhere in the building. We soon realized the smell was coming from the bathroom; somehow sewage fumes were coming in. The smell only got worse the longer we were there. We closed the bathroom door to try to keep the rest of the apartment from becoming too bad, but that meant the bathroom became unbearable. Ultimately, it was extremely difficult to be in the apartment; it certainly wasn't a relaxing place to come home to at the end of the day.
There didn't seem to be a lot of concern/urgency about this issue from the host. At the very least, someone should have come to the apartment to see/smell just how bad it was. I understand that the issue was perhaps out of the control of the host, but we felt completely on our own.