All of the rooms have mini fridges except for Tower 3. The refurb is in progress in Tower 3, and fridges are being added to them. Tower 3 would be closest to the water taxi, and the pool is between Tower 1 and Tower 3. IMO, even if you're in Tower 2, it's not a terribly far walk to anything. Not like WDW resorts can be.
We just stayed in a standard king on the 5th floor of Tower 3 about two weeks ago. This was our third time at RPR staying standard king, and the third time we have been on the 5th floor of Tower 3. Not sure if it's a coincidence or if standard kings are all concentrated in one area. Our room had not been refurbished yet so we did not have a fridge, and we could hear them working on the floors above us. Our view was mostly of a courtyard/walkway below with lots of trees and shrubs, and in the distance we could see the freeway. Same view last trip.
I personally don't think upgrading to water view would be worth the cost. There is no balcony or outside space to enjoy the view from at your room, and I know for us, we're never in the room for long anyhow.