This hotel has an excellent location with good subway connections to Namba, Hommachi and the Kyocera Dome.
The onsen is great, though they are strict about tattoos, which can be a problem for European visitors.
The rooms were of average size for a Japanese hotel room, though the lack of wardrobe (when the rooms are generally so small you cannot leave a suitcase lying on the ground and still walk) makes this a bit of a hassle if you stay longer. The rooms were clean and there was a water heater that boiled hot enough for coffee, which I appreciated.
The hotel's eco policy means that you are expected to be out of your hotel room between 10:00 and 15:00 (the hotel basically tries to 'encourage' you to skip cleaning service) if you want your room cleaned, which I found unnecessarily strict and inflexible, but on the other hand if you skip the cleaning, you still get fresh towels and replacement tea and so on. Some of the English signage is similarly brusque, which I found unusual in a Japanese hotel, but in terms of the actual stay, everything was fine.