We went to Sparrenhorst last weekend, knew it from New Year's Eve in 2011. Again we were not dissapointed.
Got a double room downstairs with a terrace. Good room, good beds with separate shower which we prefer over a bathtub. The only thing we missed was a safe in the room; which, after making a comment, was not available in only a few rooms. Next time we'll ask for a room with a safe. Also a mini bar wasn't available: only the luxe rooms have a mini bar we were told, we had some water we wanted to keep cold..
The staff was very helpful and friendly, it was a pity that all bath ropes were gone already on Friday evening as we stayed until Monday and we wanted to use the indoor pool.
The served breakfast had all you would like incl. fried eggs, tomatoes, meat, fruit, etc.etc.