Castle Kaha Lani Lihue offers an on-site free public parking area with no reservation required and complimentary Wi-Fi in all rooms. Each unit includes a fully equipped kitchen with a dishwasher, microwave, and refrigerator. The private bathroom features a bath or shower, free toiletries, a hairdryer, and a toilet. The living area is furnished with a seating area, while entertainment options include a TV, cable channels, CD player, radio, and telephone.

The room amenities include a fan, ironing facilities, and an iron. Outdoor spaces feature a private patio or balcony, BBQ facilities, and an outdoor swimming pool. Guests can enjoy activities including tennis on the on-site court. Additional services include a wake-up service/alarm clock and laundry facilities. The hotel offers family rooms and non-smoking rooms for added comfort. For security, a safety deposit box is available. The staff speaks English and Filipino to assist guests efficiently.