Winston Chen
Google
I stayed here only a short time but the staff and service was amazing. It's very close to Asakusabashi station so you can get anywhere in Tokyo very easily. I lost my shoes while staying here and the staff were super helpful in helping me find them (turns out they were placed on a shelf overnight). You won't have a private bedroom (since, you know, hostel), but some people would enjoy the company. Breakfast is simple but filling, with a wide selection of jams, teas, and coffees. Lockers for holding your stuff are big enough to hold a backup and small items, but not enough for a large suitcase.