What are the best / most recommended language schools in Tokyo for learning Japanese?

I work 9-5 pm in the Nihonbashi Hamacho area, and I should be mostly good for Saturdays, or perhaps sometimes after work.

I’ve so far been living in Tokyo for 11 months (renewing zairyu now … fingers crossed), and although my confidence in using what I know has increased, as well as my listening, my general vocab / complexity of ideas / reading hasn’t, and I don’t think I can feel committed enough to self-study, hence why I am looking for a more classroom style environment.

Any recommendations? I was looking at Coto school just because it is quite easy to get to from where I live (and if so, after work also, since I work in Jimbocho area).

Thanks!