I had a wonderful stay in Mercede's apartment. It is so easy to get to (I caught the bus to and from the airport) and is in walking distance from the centre. I was a solo female traveller and I felt really safe here too. The apartment is just like the pictures and Mercede's communication before and during my stay was brilliant too, she gave me suggestions, and offered help when I needed it.
I would recommend if you are a light sleeper to take ear plugs, simply because of the acoustics in these small streets, the traffic which goes by seems loud.
But that shouldn't put you off staying here or in Palma. It is a beautiful place to visit and Mercede's apartment is fabulous.