We found the apartment to match its description. It's spacious enough for two people easily. The bed is great with comfortable mattresses that's not pretty new from what we can tell.
Four people can make do with the sleeping couch (which is rather slack from use already), separated bathroom and WC making such accommodations even easier.
The apartment is well equipped (fully equipped kitchen including electrical devices, iron, ironing board etc.).
Due to a self-check-in solution we didn't get to know Maxim in person.
However, communication has always been polite and Maxim's replies were outstandingly fast. While yes, this is an apartment rent out professionally and not couch surfing, I disagree with the review that's criticising a "cold communication" by or with Maxim.