My cost was comparable to a hostel or capsule. I'd stay here again for that price without question.
Seems geared toward extended stays. It's an old apartment which has been repurposed into a hotel. It feels a bit run-down but it's clean and perfectly fine. No elevator, so it would be nice if you could reserve a specific floor. Noise travels freely between rooms, but the other guests were quiet.
The location is fairly convenient. Subway 10-15min walk away, and a bus stop around the corner which will get you to Tenjin or Hakata pretty quickly. The buses run closer to schedule than expected.
Don't expect hotel-level amenities. There was a toothbrush iirc, and a tablet which I found odd. But no TV, no coffee or tea, no body sponge/towel or even a washrag. The kitchenette is nice to have available, but I didn't have any use for it.
The check-in process is a bit convoluted, and they provide more information than necessary and even some which is inaccurate (e.g. they ask you to separate and dispose of your garbage, but they don't supply bags or bins for this).
The entrance lock doesn't always work, had some trouble getting in one evening. I used the correct code and the knob turned, but the lock wouldn't move with it. After about 10 attempts, it eventually unlocked.
I wished they'd given a way to block the sunlight from the clerestory windows.