All of the Disney resorts are great. People stay at different resorts for different reasons and each resort category offers guests different amenities.
So, it all depends on what you expect from the resort. If you are expecting "white glove" service, you will be dissapointed.
PO is multiple buildings with exterior room entrances set around a river. There is a themed pool, a couple of non themed pools, pool bar, fishing, boat and bike rentals, full service and quick service dining, and cocktail lounge. Transportation around property is by bus which makes multiple stops at riverside and also french quarter. I enjoy the food at both dining locations and I love the atmosphere of the resort.
If you move up to WL you will have a bit more offerings. The rooms open to interior hallways, in one very dramatic building. Casual and signature dining along with quick service, pool bar and cocktail lounge, 1 themed and 1 non themed pool, and a gym. Transportation is by bus or boat. Personally, I don't think the level of service is any different unless you are staying on the club level.
Really it is up to you to weigh the pros and cons.