The property has a superb location - right by the sea, plenty of restaurant / bar choices, multiple beaches in walking distance. Good breakfast offer (not just sweets / pastries). The ladies at the reception are very friendly and helpful. Our "room" with two separate bedrooms was great - it's an arrangement that is difficult to find, but great when you need a place for a couple 1. Guests can use the pool and the free parking of a nearby sister hotel which is just a short walk away (uphill).
The biggest plus for us - making our stay overall excellent - was that when our flight back home got cancelled, they gave us a room for the same rate as our original booking. Many would try to take advantage of you in a situation like this, but not the staff of La Conchiglia.
A few notes regarding parking / access: weirdly, even short-term (for check-in) parking is forbidden in front of the property except for one tiny place that's usually taken, parking nearby is possible if there are places, but is tight (and uphill), the paid parking offered is a bit complicated to use - would recommend the sister hotel's parking. If you plan to arrive in the evening, ask for an access code (all roads leading to the hotel are equipped with timed barriers).
Finally, as the only negative: the hotel's restaurant and bar are not great for lunch / dinner / drinks - expensive, of mixed quality and with varying service. There are plenty of better options very close.