Staying at Piera's was great. Even though you have to take public transportation to the city center, the place is just 5 minutes away from the subway so you won't have any trouble to get to the city center. Piera is just wonderful, she was very kind and she was pendant for my arrival, she even gave me a map and some recommendations for me to visit. The place is lovely, and very clean, it's just as described in the Airbnb post.