The hotel is very simple. The room I had was small and not in a good state of maintenance. It was still comfortable enough, but certainly nowhere near the four star rating the hotel alleges to have.
Also, there is a bad problem with noise as the sound insulation is really bad.
The setting is great though. Right next to a lake on the edge of a forest.
The hotel-owned restaurant is very good. Their menu is varied, proposes seasonal food, the dishes are handsomely presented, the wine list is very good and service is efficient and charming. It may not be quite a Michelin-starred gourmet temple, but I still thoroughly enjoyed an original and very pleasant dinner.

Well, Les Forges ist actually the restaurant, and it is fantastic. We stayed in Habay for 3 days, and have eaten in the restaurant twice, and that was great, though really pricey. They also have a second restaurant Le Maison blue, that's also good and cheaper. If you want to visit the restaurant on weekend, reservation is important. During a week you'll probably get a table without a reservation.

The hotel which belongs to the restaurant is very small, 9 rooms and is considered to be 4 stars, but it is highest 3. The rooms are a bit out of fashion, the bathroom pretty old and very small. The worst thing about the hotel was, that you could hear anything while in a room. That was quite annoying, especially late in the evening or in the morning. You could really hear the people in the restaurant, or cleaning ladys etc. I have a kind of double opinion concerning the breakfast. On the one side, they serve only fresh products from the region, such as home made jogurt, ardenne ham and local cheese, home-made bakery and marmelade. But... You get every day the same. You'll get a kind of a problem if you are vegetarian. We asked for some salmon for myself for breakfast, because I don't eat any sausage or ham, or cheese. They served it free of charge, but only once, and we stayed 3 days.
The area is very lovely, with a small lake, and a castle next door. The castle is also a hotel, but I suppose, pretty old.

So my opinion: Yes to the restaurant, we'll definitely come once more for dinner. But we never stay inthe hotel again.