I had a very nice stay at Gasthof Ami. It's an older house that has been converted into guestrooms, with a common dining area, and both private and semi-public baths (one indoor, one outside). It is dated, but very clean/well maintained, and the service is great. It's a little beyond the center of town, so not so convenient to access without a car; however, there is a bus stop about 5 min. walk away, so that's how I got around while visiting Nikko. If I ever make it back that way I will definitely book again.