We loved our stay at this apartment. Miguel is a great host, lives on site so was about regualrly to help with any questions or to offer advice on the local area.
The apartment is very close to sea front and Castle Bellver. It is may a 25 minute walk to the Catherdral but buses are frequent and cheap ( you can by a super saver pass of 10 tickets from local supermarket) cabs are also cheap if there are 3/4 of you sharing.
We used the apartment as a base to travel to other areas on island to explore a bit by public transport. It was very easy to get to Estacio Intermodal - the main train / bus station in Palma central. From here we went to Soller / Port Andratx/Puerto Portals/Calvia.
The closest locals beach is Cala Major and again easy to reach on bus or by cab - less than 10 minutes in car.
The apartment is really well appointed with a beautiful mix of classic spanish styling with modern features. There is a room with a double bed and another with two singles and i think the Sofa in lounge can be a sofa bed.
There are maybe 10 steps up from street level to the apartment we used which are quite steep to be aware of but were no issue for us.
We had a lovely time, no issues at all, and plan to return to Miguel's Airbnb!