If you're planning to hit up the Osaka Aquarium, this location is unbeatable - you're practically sleeping with the fish (well, not really, but you get the idea). Now, here's the funny thing about Osaka: despite being right next to Universal Studios Japan, it still takes about 40 minutes by train to get there. Classic big city shenanigans!
The room itself might be compact (welcome to Japan), but they make up for it with some cool features like a projector in one of the rooms. Big plus: Yamato delivery service will bring your bags right to the hotel and they'll be in your room waiting. The Tempozan area has some decent attractions - that massive Ferris wheel and the marketplace are right there. And while you're a few subway stops from Osaka's main attractions, you'll quickly learn that EVERYTHING in Osaka is a few subway stops away. This city is seriously huge!