Hello! So we are in the process of having our pool built and gunnite was blown in yesterday. We are wanting a grotto and asked the pool builder to include a bench so we can go into the grotto and sit back behind the water fall. This picture is how they designed that feature and my husband and I are worried that they made a mistake. We were envisioning swimming into it however they just built a wall. Is it too late to have them fix it?