The apartment is really nice! We liked the old but well-renovated house, and we absolutely enjoyed the neighborhood: there is a nice garden outside, the surrounding streets are lovely and quiet — you're quite close to the city center, but living in the area that is not busy and loud. Everything we needed was easy to reach: should it be a supermarket, pub or some nice coffee place. We really enjoyed Prague, and living in this apartment effected it in a very good way.
The communication was super quick. When we arrived, the baby cot we requested was missing, but the issue was resolved within a couple of hours without a problem.
It's specified on the listing that the hosting is provided by a company, not by a private host — and it's okay, but it's not that usual Airbnb experience you might expect. It's not talking to a real person who rents his own apartment, but more like business relationships with company's managers — with all its pros and cons. But once again, it's okay, just be sure you know that in advance :)
I definitely recommend choosing this apartment for you stay in Prague.