First I'll start off by saying the apartment was indeed very nice. It is newly remodeled, some appliances even still had their new stickers on them! It was much more spacious than any other Airbnb or hotel we found for the price, clean, and the location is unbeatable.
We were disappointed to discover, however, that once we started having issues with the apartment, Alex would not respond within a reasonable time frame. The first night we stayed here, my bf took a shower at 2:30am. About half an hour later the elderly neighbor from downstairs knocked on our door distraught to say that her apartment ceiling was leaking. My bf went down and saw that water was dripping onto her carpet from right below our shower. I immediately sent Alex an Airbnb message at the time, then a follow-up at ~9:45am, called twice through the Airbnb host number around 10am (including leaving a message), and another follow-up at almost 11. Didn't receive any response until 11:30am. Alex's message claimed that it wasn't related to showering and that they own the building and have already looked into it. Doesn't sound very believable considering the timing on the leaking but, whatever. We were assured it's ok to shower.
Two days later the same thing happened again. This time the neighbor said a maintenance person was supposed to stop by that day but never did. I then messaged Alex through Airbnb 3 times. It took 25 hours(!) to get a response and when they did respond, it was very snarky and dismissive of the whole situation. They literally sent me a screenshot of the last message they sent (days prior...) and circled the "it's ok to shower" part. So the answer was basically "we have told the neighbor not to bother you and you should continue showering as usual". It all seemed pretty sketchy and like they weren't helping this old lady at all.
Also the bathroom sink was clogged ever since we arrived. I mentioned this to Alex but nothing was done about it. To be fair though, I only mentioned it once and didn't press the issue since it wasn't a huge deal to us.
So, yeah, all that to say that the apartment itself is nice, but communication with the host is pretty terrible. Overall, even with the stressful moments, we enjoyed our stay.