We stayed here for two nights and thought it was probably the best 'western-style' place we stayed at in Japan in terms of value for money, location and quality. It was great having a kitchen and living area rather than just a bedroom. The staff all speak good English, and for those who don't like asking for everything there are instructions on how to use all the appliances in your apartment, though the receptionist helpfully translated all the buttons on the washing machine for me! On that subject, we saved a small fortune being able to wash our own clothes rather than using a hotel laundry service, as all we had to pay for was the detergent sachet, which they even sell at the desk.
The decor and fittings are more simplicity than high-end luxury, in a very good way - everything works without making a big deal out of it. It's a calming kind of place.
Cleanliness-wise it was spotless, and service-wise the staff were delightfully courteous and helpful - nothing was too much trouble.
The location is the other great factor - it's across the road from the station that provides direct airport trains, a short stroll from Namba metro station, and on the doorstep of the wonderful Namba district with all its restaurants, bars and shopping arcades. It was just great.