I was initially under the impression that the airbnb is just an apartment where the toilet and shower is shared by a few people, but they had open access for the whole building. There were maybe around 4-6 floors, where each floor had a shower/toilet (and maybe around 6 rooms on each floor). It was my fault for the assumption, but I believe it should be clarified on the ad that so many people can go between floors and access the toilets or showers (as it did not feel as safe for me).
Note that there is no elevator either, so taking luggage up can be annoying.
The private room was okay, but shared hallways, toilets and showers were very dirty and not up to standards.
The communication with the host was great, we got a fast response to our worries and received a full refund as we decided not to stay.
I would only say that as a young woman, this did not feel like the safest place to stay at, so I would recommend upgrading to a hotel or paying more for a private bathroom and a peace of mind.