The flat is small but very comfortable and well equipped, located in a pleasant and green complex with a nice swimming pool. Arenal den Castell is a touristic village, this means you get all the basic services very close (really wonderful beach, supermarkets, atm and some cheap but good restaurants) but also means it gets a little bit noisy in the evening. We didn't meet Moly, but she was very kind and efficient in giving us the details and helping us with a baby chair. Recommended, specially for families.