Great location, but poorly maintained property.
The managing agent responded to my communication regarding the unit being unclean, with dust covering most surfaces in the unit. However, despite the cleaner apparently coming back to re-clean the property, the unit was still suffering from what appeared like a prolonged period of minimal cleaning and maintenance.
My advice, communicate with the managing agent in the first instance and insist on things being fixed appropriately.
Overall, the owner needs to spend the money to maintain a seaside residence appropriately. Good location and suitable to house your small family for a self sufficient holiday.