If using the JR line, better ride the taxi from the West Exit of JR Ryogoku, its quite far if you walk. If the taxi cant locate it in the GPS, its very near the Summit Supermarket. Easy check-in. Skytree is visible from the balcony. Asakusa or Sensoji Temple is around 500 yen by taxi from the hostel. Then you can walk to Ichiran Ramen Asakusa, yummm!