I stayed here one night, I arrived very late and had booked an apartment for about a week.
The location of the hotel is very nice, about 200 meters or less from the entry to Old Town. The staff was very friendly and accomodating, the room large(ish) and the breakfast was delightful, very large and I think included in with the room.
The area is fantastic, it turns out my apartment was about 200 meters from the hotel. I suggest trying ROST, a great bakery and coffee shop in a nearby shopping center. Get whatever is fresh out of the oven (I had a cardamon bun) and a nice capuccino, take a loaf of black bread or a bun back for later.
The area has several shops, restaurants, coffee shops and even a supermarket or two nearby. Great place to stay when you visit Tallinn.