The value here is in the location and the view from the shared decking upstairs. It's within walking distance of all major tourist attractions and beneath the Giralda itself - incredible! My brother and I enjoyed several evenings sitting up there.
We didn't use the pool, since the water was below the filter, but we expected that. Otherwise the flat is functional, clean, and comfortable. Communication from Esther was great and we were able to check in late. Keep in mind that the only bathroom is en suite. Good flat, amazing view.