We were travelling in a large group with multiple families with children. We were staying out of kuta, however had a night time flight home but still had to check out by midday from our hotel. We were considering bag storage at the airport, but ended up booking a night at Hana Kuta Beach Hotel instead (so did the other families we were travelling with). The price for the room for the night worked out the same or cheaper than the airport bag storage. The location is amazing for shopping, being right on Kuta Square, and only a short walk to the beach. Once the kids were over the shopping, they had a quick swim in the pool. We did not actually stay the night, so can not comment on facilities like air-conditioning, bed comfort etc. Staff were friendly, organising our transport to the airport for all of us.
It is a basic hotel, but was perfect for what we used it for. We would recommend it for others in a similar position to us with late flights.