I have stayed at the Dolphin twice (both times in July) with standard room ressies each time. My first standard room was on the lagoon side of the hotel right in the center with an excellent view of MGM and Epcot fireworks. Beautiful. The next time we were on the side of the hotel facing Epcot, BC, and YC. Great view; great room...but good bit more of a walk from everything.
LOVED the Dolphin. Be sure to join the Starwood Guest program. In my experience, they will upgrade you (view-wise) if possible for free. The standard room was large and the heavenly beds were HEAVENLY!
Be sure to eat at Fresh for Breakfast. On the weekend, if you time it right, you can have breakfast and lunch items! It is one of the best restaurants in WDW. We all loved it (DH, DS 14 and DD 11)!
Enjoy!!!!