I stayed at Ryokan Katsutaro twice in Jan 2011 and can fully recommend it. It was easy to find and only a 10min walk from Ueno station along a single road. The staff were very pleasant, the rooms were clean and comfortable. The accomodation is pretty standard ryokan and not set at a high level, but was more than you would need.
I will be staying there again on future trips to Tokyo.
- Free Wifi