We booked Mimaru Osaka Namba Station for 4 adults (the floor plan was two bedrooms and two baths) and it was the perfect size for the occasion. We were able to have the flexibility to hang around in the living room and utilize the kitchen when needed, and for Japan, the space was pretty big. The bedding and pillows were exceptionally comfortable, letting us be very well rested throughout our stay.
Location of the hotel is also very convenient with lots of food options, convenience stores, and attractions nearby within walking distance. The hotel's location also was within walkable distance to different subway/train lines, so it was very easy to navigate.
Additionally, when checking out, we wanted to courier the luggage to our next destination, and the staff was incredibly helpful and speedy in getting the process done so we would get to our train on time.
Overall, we really enjoyed our stay and would definitely book this hotel, or any of the Mimaru hotels when we return.