Beware: there is a "Gastehaus Maria" just ten houses down the road from this "Gastehaus Maria-Anna". it ca be a little confusing and you may end up at the wrong door! We have actually stayed at both places on different trips. We enjoyed this Gastehaus Maria-Anna just a a bit more for the following reasons: the room was just a bit larger which really made a difference when it came a place to sit while you weren't in bed! The hostess was very friendly, we arrived late at night and she left a key out for us to let ourselves in. Breakfast was included in the VERY reasonable room rate and was good, nothing special but it was great to have it there available and in the price so that we could eat before we left. I will, however, say that the milk was incredible. I know its a silly thing to rave about, but truly the best milk I've ever had (and I buy mine directly from a dairy farm!).
The location is great, a pleasant walk into the downtown area. the only thing lacking was a common area for guests to sit and relax, but we found a lovely hotel that had a restaurant/bar with fireplace that was very cozy, about 15 min walk away (Staudacherhof Hotel--looked lovely but outside of my desired price range).
All in all: great value! We will stay again.