The flat is in an amazing place where you can basically walk to most attractions, and is surrounded by amazing restaurants and cafes. And Frederico is easy to communicate with, responsive, and is very kind to let us store our luggage in a store room after check out, which is super helpful.
The only thing I would complain is the neighbor that lives upstairs, who were a bit noisy in the late night. Their dog was barking hardly even at 2am.