First of all, the staff was amazing. There was a mixup with the reservation and they really fought with Expedia to fix it for me. That alone would earn them 5 stars. But they earned it many times over after that. Both the types of rooms we got to stay in were spacious, with comfortable beds, and excellent amenities. I will say that some parts of the room were a little too dark for my taste, but it's an aesthetic and I respect it. The breakfast was simple but delicious and the staff there were also super helpful and there when you needed them without feeling like they were on top of you. The area is super convenient for trains and general shopping, but there is a highway right outside the window so it's not the quietest. Good soundproofing helps, but I did hear cars a couple of times.
Overall, I would definitely return for any all trips to Osaka.