Very clean place and Marianna is very communicative and organized. However, if you're a light sleeper, it won't work for you unless you sleep in the airbed in the living room because you will be able to hear the street noise from the bedroom that faces the street.
Keep in mind that you are sharing the space with Mariana, the Airbnb host, since she lives there, so your group needs to stay quiet and keep cleaning after yourself (esp. the bathroom & kitchen). If you're messy or loud you should not rent this space and just rent a whole apartment. As long as you follow the rules it'll be a great place to stay.
Some rules you need to follow: No shoes in the house, no dirty dishes in the sink, no fish (and some other food I can't remember) in the microwave (due to her allergies), keep the shower curtain closed and bathroom door open when you're done using the bathroom, do not leave hair in the sink/bathtub, keep the bedroom window open and turn off the AC when you're out of the room, do not use her toiletries.