We were a group of 4 doing a month long work placement at a hospital in Palma de Mallorca. We stayed at Carlos's flat for the entire 4 weeks and it was perfect for our needs. The location is nice and central, the apartment is spacious, there is a/c in every room (very welcome during the Mallorcan summer!), the shower is good and the kitchen is pretty well equipped. Communication from Carlos was always prompt and when we requested some more kitchen items, he dropped them round within a couple of days. The dishwasher doesn't work but we weren't too bothered about this.
I would happily recommend this apartment for anybody needing longer term accomodation in Palma.