We visited Prague in September and stayed at Anna's apartment, and enjoyed every moment we spent there.
First of all Anna is a great host, she met with us, and filled us with all the necessary/essential information.
The apartment is located in Vysehrad area, very close the city center, only 2 stops by subway which is about 6 minutes (plus 5-8 minutes walking to the subway).
We loved the big terrace! It was a huge pro. Having breakfast in the terrace was priceless. The apartment is self was also nice, very clean and simple.
I definitely recommend Anna's place! Her positive energy welcomes you, and gorgeous terrace makes you want to stay more in there!