This appartment is more of a hotel than an appartment. There's a reception and a coffee shop downstairs (althought I have to say that the coffe shop might be a bit expensive, I personally don't recommend having breakfast there).
Your beds would be made regularly, and you'll have to make a 50€ deposit at your arrival.
Overall, the appartment is very good. In addition, the metro station and Prague's main street are really close to it. I'll totally recommend it