This place is great for what it is! It is small, but that's Tokyo — though probably not fun for more than 2 people (and hopefully those two people are a couple). The highway traffic is in fact SUPER loud, and its consistent all day/night. It's fine when sleeping if you have earplugs (I always travel w some anyway), they provide, but otherwise its definitely a low-grade noise annoyance. I spent barely anytime here except for sleeping / showering / washing clothes, so, it was fine. The AC worked great, and the washer / dryer is actually very good. Overall, super clean, cute, and fit my needs well for cheap and convenient, but noisy.