I have photos of a mini-suite on Sapphire Princess (not E715) but I don't know yet how to post them. We're still trying to figure out how to get them from the camera to the computer. But the photos in the Princess brochures and website are exactly what they look like; what they don't show is how roomy the bathroom and closet area are, and how much closet and drawer space they have.
The balcony is large and will have privacy and will be partially protected by the balconies above on Dolphin deck. The location is good also--near the rear lifts and stairs; you go straight up to the Terrace pool and Horizon Court, and just a short walk down to the dining rooms and Promenade deck. I think you will find it ideal.