The first time we tried the cliffs we weren't sure if we would like it, so we booked a 3-night cliffs stay in the middle of our trip, so we could have beach at the beginning and the end. So you might consider doing that.

Also, our beach hotel was not full at the time, so we offered a token amount to keep our stuff in our room while we were on the cliffs, and they accepted. And we only packed a small bag for our cliffs stay.