I stayed at Maria's place for a month, and it's abundantly clear that Maria is a thoughtful person who wants her guests to have a great stay. She gave me a very fair price, met me at check-in to introduce me to the apartment, periodically checked in with me to make sure my stay was going great, and was immediately helpful if I had any issues (e.g. I reported some internet slowness the first day, and within the hour she'd resolved it - the internet company had incorrectly applied rate-throttling, and the internet remained blazing fast from then on). The apartment itself is also very nice and comfortable: I'm a programmer and need to spend many hours in front of my laptop, but both the dining room table and couch were comfortable and up to the task. I particularly liked the kitchen, which is stocked with any sort of implement you could need - be it a toaster oven, blender, spatula, cheese grater, etc. Both fridge and microwave are great, and had no problem keeping my food cold or hot.
The only downside I found to the apartment unfortunately isn't Maria's fault at all - the husband & wife next door keep a dog that they haven't trained, so throughout the day the dog will go on barking fits. When I mentioned this to Maria, she immediately tried to resolve the situation by contacting the neighbors, but their same laissez-faire attitude towards their dog applied and the wife insisted that it wasn't a problem. This is frustrating, because Maria is an excellent host with a great apartment and she deserves to have Airbnb guests. The silver lining is that though the dog is explosive, it usually stops barking within a couple minutes of starting.