Some reviews mention space issue on trip advisor however I presume these people have never been to Tokyo before. The size is about that of a small hotel room which is the standard size for a flat in central Tokyo. We were still comfortably able to fit 3 suitcases so no issues. It's very well located for one of the metros and a 20 minute walk from a main station with major metro lines. David is extremely knowledgeable and very helpful if you have any questions. Would strongly recommend if you're looking for value for money comparative to similar options with such a good location. I would ignore any sub-5 star reviews mentioning lack of space or room amenities as they clearly don't know what to expect from Tokyo, this is extremely good value for money.