yes. There is a microwave in the common area.

Here's what I did, and it worked out nicely: - Take the monorail to Hamamatsucho station (the end of the line), then transfer to JR (Japan Rail). From there, take the Yamanote line (headed for Osaki) to Okachimachi station. Exit on the west side, then head south (make a left when you leave the station), and you'll be on a narrow street with not much on it that follows the train line. After walking a few minutes (past the first traffic light), you'll see a sign that says AKI-OKA (I think it's short for Akihabara-Okachimachi?) with some random looking numbers and a letter or something, as I recall. Make a right down the nearest street to that, and then go a couple of streets, and you'll see it if you look to your left. I seem to recall that doing that takes you very close to the hotel. The sign is very yellow with blue lettering. That's probably the easiest way, and likely one of the cheapest as well.

Yes. Ir was

I do speak Japanese, but the staff here spoke very good English, so I wouldn't expect much trouble. Credit cards are accepted at the vast majority of hotels in Japan (they're one of the few places you can be relatively sure that they'll take cards). I know this is an old question, but seems like something that a lot of people might be wondering about. (Just to be clear, I paid by card when I stayed here.)