Toyoko inn was the go to when I was living in Japan. Clean, neat, inoffensive. Often co-located near railway stations. Cheap

fond memories of staying at the one in Kitami one night when me and my mate had got massively drunk and lost our house keys

i like to stay in a ryokan also but they can often be a bit pricier. Or the capsule hotel at Asakusa was a regular haunt

memories!!