It was so poorly made in so many ways. The graphics and camera controls felt like a Gamecube game. It lagged frequently. Every single minigame was trash, especially picnicking / sandwich making. The interiors of most (but not all!?) buildings were just menus rather than actually rendered locations.
HOWEVER, the classic Pokemon collecting and battling were fun, even top notch. The enemies used smarter strategies than usual. The finding and catching Pokemon in the open was a huge step up for collecting. There were way more bosses to fight than usual which I thought was an improvement. It was easy but it is a kids game after all. The story was above average.
Overall, pretty good. Glad I played it. Definitely not one to skip if you are a fan of the series. Worth ignoring all the technical issues.