Overall Kura's place is top notch for the price. If you just need a bed, power outlet, and a shower, it's perfect. They have security cameras to discourage theft and lock boxes for small valuables if needed. Towels are available for a 100 yen. Your area is big enough to fit yourself and a backpack so you can keep valuables close. It also has a hanger for your coat.
You don't get much but it's super cheap and clean. The shower is small but the water pressure is awesome and hot water works great. Can't beat the price. Highly recommend. the value is what does it. My lunch cost more than my stay here.