Efi's place is cozy and well-located. There are several cafes and restaurants nearby as well as a farmer's market.
You can either walk or take a short ride to the city center, but I preferred to stay in the neighborhood since it is more local.
Communication with Efi was perfect. She was waiting for me in front of the place and showed me around the flat. She even provided breakfast in the fridge. I can recommend to stay at her place if you want to experience Prague from a local's perspective.