It is an amazing location. The train station is nearby, there are convenient stores located nearby, and if you can't let go of your Starbucks, there is one right next to the train station. Also, Uber and 99Taxi are pretty active in Brazil, so there are always rides available nearby for good prices.
Katia is an amazing host. It was my first time renting an airbnb for myself in another country, and it was an incredibly good experience, so now my expectations are set pretty high. She made sure we had everything available: towels, soap, bed linens, blankets, pillows, pots & pans, utensils. There were also little booklets in the drawers for some tourism and restaurant cards in case we wanted to order (we used iFood to order food, you can tell the porter that you will have delivery coming and they will let him in). I felt pretty safe in this apartment (safety is one of the most important things for me when I travel) and, since it doesn't face the street, it is a pretty quiet & calm place.
I had a really good time in Brasil, walking around was exhausting, which made Katia's nice place even better since it felt relaxing.
I recommend it 100%