It was clean and served its purpose.
We had booked because we needed one night stay before heading to Kyoto the next day, and I had heard fun things about the robots. My first disappointment was there no robot dinosaurs at this location, but it was two robot people. Check in did not go smoothly and we had to ring for a staff member who showed up immediately and was able to help us, so we didn't even interact with the robots. The staff member was able to help us right away, he was wonderful.
But other than that, it was an okay stay. The room was clean, and moderately comfortable. For just a single night stay it was fine. I've stayed in business style hotels in Japan before and knew the rooms are on the small size, but this was definitely the smallest room I've stayed in.
Ultimately, I won't likely book at this hotel or chain again because for the price there are many options in Tokyo that are going to be more comfortable, and the main draw was the quirky robots, and they were a bit of a disappointment.