We had a last-minute change of plans and Ester was flexible and willing to accomodate us with less than 24h notice. Es Castell is quite nice and relaxed, and the apartment is just off the smaller of the two ports in the town. We found the apartment spacious and comfortable enough for the 6 of us -- though do keep in mind it's on the ground floor and so quite exposed to street activity. We spent most of our time visiting Maó and the beaches in the south, and cooked most of our meals in the well-equipped kitchen. There are supermarkets very close by and a number of restaurants at the port; the bus stop is less than 10 minutes away. The apartment does not have a swimming pool, but you can take a dip in the port just a few steps away.