Highly recommend staying at Masaki's place! If you're arriving directly from Haneda airport, you can take 1 train ride to Yashiro station and it's about a 10 minute walk away. Otherwise, the closer and more convenient Higashimukojima station gets the job done and connects you to pretty much every line. As for the accommodation itself, it's a very homey feeling place that was actually bigger than I'd anticipated! All the essentials were there but it can get a bit cold while you wait for heating to take effect. Maybe I'd recommend a chair and some hooks in the bathroom so that you can change clothes away from whoever you're staying with. Those are just some little things, as the convenience and general feel of the place made it all worth. Thank you Masaki!