Hotel Milenij is a prestigious 5-star hotel situated on the Opatija waterfront. The hotel boasts a 24-hour reception, ensuring that guests receive assistance at any time of the day or night. The rooms at Hotel Milenij are elegantly designed and equipped with modern amenities, including air conditioning, flat-screen TVs, and complimentary Wi-Fi. Guests can savor delicious meals at the hotel's restaurant, which offers a diverse menu of international and local dishes. The hotel also features a spa center with a range of treatments, a fitness center, and an outdoor pool. With its stunning sea views and impeccable service, Hotel Milenij is a top choice for those looking for a hotel with a 24-hour reception in Opatija.