Japanese Language School in Tokyo – so many doubts

I’ll be living in Japan for a year since my wife got a temporary job there, and I’d like to take the opportunity to maximize my Japanese skills.

I’m currently at an N4 level and I’m considering three schools: Coto Academy, ISI Shinjuku (or one of their other campuses), and Shinjuku Japanese Language Institute. I’ve read several reviews, and they all seem to have both pros and cons.

Given my level, availability to study intensively, and strong interest in learning, which one could be the best fit?

I imagine that Coto has many advantages, such as smaller class sizes and often more motivated students compared to the other two. However, the fact that they continue classes even during holidays put me off a bit, since I’d like to use that time to travel with my wife.

Anyway, if possible, I’d like to gather more opinions because I’m very undecided.