Maria is a great host and the place is amazing too. We checked in quite late at night, yet Maria and her daughter were waiting for us with a big smile and chocolates despite us taking a bit more time to find the place after parking our car. The "find directions" link of Airbnb takes you to a wrong address in the opposite direction. Be aware of that.
Location - Can't be more centrally located in a beautiful town. There are two parkings near the place which are reasonably priced (weekends and night parking is free). You will find bakeries and restaurants at few metres away. If you want to spend all of your days at the sandy beaches then probably you should find some place in the southern side but if you want to explore the island then you can't go wrong with Maria's place. You can still reach any becah with 1 hour drive.
Amenties - there are perhaps more than you would require. Anything you would need for a good beach day is available including mats, umbrella, toys for kids etc. Kitchen is very well equipped, but you won't find dishwasher though. Having said that, fridge had all the stuff for breakfast and we also found some beers and a bottle of wine. You will never feel need of having more towels (we were only 2 adults with a kid). There is also a washer available.
Overall experience was excellent. It is an old place but very clean with lots of charm of a traditional Mallorcan house. And what to say of this beautiful island!