Recommendations for a vacuum cleaner

My current vacuum cleaner’s battery is completely dead. Instead of replacing the battery, I’m thinking of getting a new one. Any recommendations for a cordless slim/upright cleaner? If possible with a lot of power and a futon attachment. The ones on recommended on r/VacuumCleaners are all too big for Japanese houses. Not sure if it helps but my house is 100% flooring.

Thanks!