Hi Mayra,
Disney's Port Orleans - Riverside Resort is beautiful. I'm sure you will have a lovely room wherever in the resort you stay.
The theme of the whole resort centers on Southern hospitality. The resort is divided into two sections - Magnolia Bend and Alligator Bayou. In the Magnolia Bend area, you'll find the buildings themed to plantations and mansions. In Magnolia Bend the buildings are three stories tall. In the Alligator Bayou section, the theme is more rustic and like the backwoods, and the buildings are two stories tall. Other than the themes and some of the interior decorating in the rooms, the rooms in both sections of the resort are fairly similar in regard to amenities.
For an additional treat, check out the Royal Themed Guest Rooms in Magnolia Bend. These rooms are decorated as rooms in which many princesses have come to visit Princess Tiana. They are beautiful!
Port Orleans - Riverside has multiple bus depots. For the closest access to the bus, it looks like in Alligator Bayou a good choice would be buildings 24, 25, 34, or 35. Buildings 36 and 37 in Alligator Bayou, as well as 80 in Magnolia Bend, are also located close to a bus stop. Finally, Building 85 in Magnolia Bend is also close to a bus stop.
I hope you have a great trip, Mayra! Please do not hesitate to ask if you have any further questions.