If you like sushi, and can accept it is made by chinese in a typical chinese restaurant atmosphere without any kind of pretention then this is your place.
The food: sushi is basic, with some interesting deviation (I recommend the salmon roll with philadelphia). But the offer is wide and of all kinds. Sure, don'expect some kind of fusion cuisine like you may find in other, way more expensive restaurants.
The place: typical chinese restaurant with red lantern and kitsch décor. tables are a little close to one another, personnally I don't care, sure I wouldn't recommend it for romantic or intimate dinner. On the other hand, who takes his/hetr romance to an all you can eat sushi?
Service: fast, efficient. You can feel THEY are in a hurry to free the table, but in no way do they pressure you to do so like I've seen doing in other places, and it has been appreciated.
Price: very convenient all you can eat formula, especially if matched with the quality and variety of food. Even more if compared to other sushi restaurants in Luxembourg!