We had a lovely time in the finca in mid-september! The terrace and garden are just as pretty as on the pictures and the house itself has higher ceilings than expected. Very clean and welcoming! Also literally no neighbours, which was especially nice after long days on the beaches.
Magdalena is very uncomplicated and helpful and communication was very easy thanks to google-translate.
The rooster is indeed easily startled, sometimes the lights on the terrace would make him talk to other roosters in the middle of the night, so bring earplugs if you're a light sleeper.
The roads to the finca are quite an adventure but if you're going slow it's not a big deal.
If we ever come back to the island, we'd definitely stay with Magdalena again!