We stayed a full week, and left with mixed feelings.
The back of the house and its swimming pool are and excellent place to stay at. Marcon is a tiny village that doesn't offer much, but it does have a nice restaurant, a small supermarket and a bakery. Since it is quite central, it's a good place to discover the rest of Mallorca.
What we didn't like is that upon entering, the house was stone cold and smelled muffed. It took a lot of heating to make it bearable, and we never truly got rid of the smell. The beds are either squeaky or the mattresses should have been replaced 10 years ago - honestly. The fact that the electricity bill has to be paid for separately was hidden in the text, at least we didn't read it until confronted with it. We paid about 27 euros for heating, air conditioning will probably raise the bill a lot faster.
Though very friendly, the host doesn't speak a word of English and there are no tips on what to do in the area, so we were a bit lost. Usually there is a paper with activities around (like local markets).
There's no salt, oil, dish washer tablets and things like that. This means you have to go out and buy, and I since every guest probably does the same, the house lord has a big stock of these things. Might as well leave some of that for the next renter, right?
Add to that the very formal tone of the rental company - never had to fill in so many forms before and it seems they can't be bothered to write reviews for their guests. All in all we were left a bit underwhelmed. But the pool was great!