We went ther a little over a year ago in 2014 October fall school break. But I've had many people asking where we stayed. So after some digging through our family albums I finally found the hotel name! Lol... This hotel is not exactly right next to Legoland. Its not that far either - 10-15 mins drive perhaps. Very easy to get to Legoland. Its situated by the highway, you might expect a noisy place but was pleasantly surprised it was not as noisy you would expect.
We booked through Legoland Holidays on the Legoland website. Its a family special so prices may vary. We did not make any request, but we got a quiet room behind the hotel. Therefore good sleep quality for us. When we travelled, my kids were 7 & 4, so extra beds were required. The room was spacious and clean.
Breakfast was aplenty and for me it was good. Its the typical German fare, unless you are the type of person who eat a very sweet breakfast, which they also provide but with limited choice. The breakfast buffet was frequently replenished. Tables were cleared as soon as possible as well for the next persons' breakfast. There is also some kids play area in the breakfast room/hall. The check in and check out process was fast and efficient. Plenty of parking spaces too!
Be warned that there are not many choice of restaurants within walking distance. The only restaurnt was right next to it but the food was very good. Service was not bad as well even with a full house. There is also a petrol station opposite the property. So if you want to get some snacks for the kids before getting on the highway, that's the place.