We had a great stay at the Charles Bridge apartment. Check in was seamless. The apartment was large and very clean. The apartment had a great view of the castle across the river. The apartment is located right by the Charles Bridge and you can walk to many sights from the apartment.
We arrived around 8:30 pm in the evening, but thankfully there was a pub with good food right downstairs for a convenient dinner. I'd definitely recommend this apartment if you're in Prague.