I stayed at this little B&B - I don't think they have more than 6 rooms - while at a conference at the NATO school in Oberammergau. If you are going to the NATO school for anything, this place to stay. Leave the hotel and go right, and it is an easy 7 minute walk away and the views are wonderful.
If you're looking for town, leave the hotel and go left. Less than 10 minutes that way and you're in the middle of town. The large church in town is your landmark so you can't get lost.
The breakfast was typical Bavarian with fresh breads, cheeses, meats, juice, yogurt, and coffee. There's plenty to eat.
They offer Wifi but I did not use it so I am unsure of the speed.
The rooms are large, you get your own bathroom with plenty of hot water.
All this at 30 Euro a night. PLUS, they give you a discount pass that's good all through the area for Spas, Pools, Lakes, Ski Lifts, Castles, even the local Casino!