Not all the way to the hotel. I honestly think you’d be wasting time utilizing the underpass that doesn’t even take you to the hotel.

Here's more detail from my hotel review: "There was a self-serve laundry room on the 5th floor with 3 washer-dryer combos and a detergent vending machine. Cost (coins only) was ¥100 for washing (usually ¥200 at other hotels), ¥100 per 30 minutes drying (you can insert 2 coins for 60 minutes), detergent ¥50. No change machine but the front desk gladly will change a ¥1,000 note for you. I did have a problem with a dryer which didn’t stop turning when I opened the door (clothes were dried before the timer ran out). There’s a phone on the wall with a direct line to the front desk if you have a problem. Someone came up but couldn’t fix my problem. Washer was top-load and took about 30 minutes."

apparently they do but we couldn't have it cos we didn't specify when we booked. let them know early that u want inter connecting rooms

Not bad.