The old town square appartments is basically scam organization.The pictures on Expedia website have nothing to do with the appartment they gave me. The rooms on the website look bright with kitchen tables, chairs and so on. The one I got was without any daylight or outside windows or chairs. A dark stinky place that my daughter was scared to get in. When I said it is nothing like the one at the website. Not very friendly pearson at the front desk told me that it meets the standard. When I asked him to define standard. He said there is a bathroom, 4 beds and a kitchenette. When I tried to compare with the pictures from the website. He litterally said it is only for advertising. And recommend to ignore unbearable smell, a combination of the stale air, cigarettes and uncleaned toilet. They said somebody can clean the toilet at some point, but since we needed it immediately after long flight and the appartment is15 minutes walk from the address on the website, we decided to clean it. They send you a suspicious app to checkin to supposedly save your precious time in Prague, although it is litterally one signature. But, they don't tell you that you have to walk to the appartment 15 minutes after check in and to drop the keys at the office, as the only way to check out, another 15 minutes in the opposite direction of the airport.
If you get attracted by the pictures of these appartments, just skip it, as they have nothing to do with reality and they don't care, it is nonrefundable.