We stayed at Hotel Des Bains for two nights, incl. dinner, and were disappointed overall. The room (a 'junior suite', room nr. 23) was in need of renovation and small for a suite. The bathroom was tiny and awkwardly divided into two separate spaces, which looked like converted closets. (The bathtub was in one 'closet' and the toilet & wash basin in the other. You had to step right into the bedroom from the bathtub; there was no place to just dry off. I've stayed in lots of -fancy and budget- hotels and this is the most impractical bathroom I've ever come across.) The water in the shower was tepid. Another problem was that the phone was broken - we were able to get through to the reception but we could not receive incoming calls. Management hadn't bothered to warn us about the phone, so I spent 45 minutes waiting for a call that was never put through. I found out about the problem with the phone when I happened to run into the co-owner downstairs. The person who called me had left a message with staff, but they had been 'too busy' to come up to the room to notify me. It struck me as unprofessional that they hadn't told us about the broken phone when we checked in, and that they hadn't bothered to promptly give us our friend's message. As for the dinner; the food was good the first night, and excellent the second. The only problem was that they didn't heat the dinner space adequately. I was left with the impression that they may be having money problems; they certainly seemed to be good at penny-pinching.
All in all, the service and the accommodations weren't worth the four stars or the steep price. The region (Hautes Fagnes) is beautiful, but there must be far better (quality & price) hotels in the area, and I really wouldn't recommend Hotel Des Bains to anyone.

The hotel is situated in a very nice area, on the lake of Robertville, the wellness center is new and super nice, the food in the restaurant is delicious, however it is a bit pricey. The only thing that I didnt like a lot was that the room didnt look enough renovated for a 4 star hotel /especially the bathroom/. It is true that the hotel is on the main road so avoid the rooms which face it because it can be noisy.
It is a family hotel and the owners are very kind and helpful. The Chateau de Reinhardstein is near by, if you go down the path near the castle you will find some beautiful views and a waterfall.

The Hotel de Bains is located in Robertville, a short drive from the nature areas of the North Ardennes. It has a family-run feel, and wonderful grounds along a lake just outside of town. The breakfast terrace gets special mention: it's a lovely place to linger in the mornings.*

The Hotel is located along a main road into Robertville, the trucks can create noise during the day. Check-in was handled well, and there was good guidance to the area. There was a bit of confusion on the room, a choice between a large room with twin beds and a smaller one with a queen, but the view and ambience were very nice in either case. There is a lounge and a modern pool, a nice dinner restaurant and smaller breakfast restaurant.*

There is a small elevator up to the rooms, stairs are an alternate, but you have to switch on lights all the time as they are saving energy. The room is traditional, comfortable and clean, but with the feel of staying in someone's house. Views over the lawn and lake are wonderful in the summer: there is a camp across the lake, but the noise is not a problem. The bathroom has a tub and hand shower, toilet and bidet, also in the traditional style.*

Breakfast is served on a terrace overlooking the lake and is a wonderful way to start the day in summer. Breads, meats, yogurt, and cheese are served, along with a pot of coffee. There are sitting areas nearby, outside the pool, with a bit of an oriental motif.*

The hotel is a good base for exploring the area, and is convenient to nearby towns in the North Ardennes. It is clean and modern in the public areas, close and more homey in the rooms.*

My family and I decided to finally return to the Ardennes ( Southern Region of Belgium) after 15 years. We first went to walk in the Fagne after which we decided to go eat lunch in this place we remembered to be delicious- Hotel Des Bains. It seemed like a wonderful way to spend a few hours talking about the past. Unfortunately, when we arrived to Hotel Des Bains, we were immediately stopped by a hotel employee who said in a snobbish way "Can I help you". We then said we would like to eat lunch please. In the meanwhile the cook who seemed to be her superior came out and stood behind us. She then asked us "Do you have a reservation?" We looked around and the entire place was empty. We said no we don't. She then looked discretely to the cook, as if she was seeking his advice. She looked at us and said I am sorry but we are over booked. We were very surprised as it was already 1:40pm and lunch time is over at 2pm and she still said we are waiting for a lot of people. (Not even a hundred people could have filled that place up) Being left without a choice, we then asked to walk around. After a lot of hesitation she accepted. We walked around and saw that they have restored another building as a wellness center that seemed very nice. And the view on a sunny day was absolutely gorgeous. However the people that were there were not the kind you want to stay around with, especially this being a very small hotel. It was a bunch of arrogant and snobbish crowd. One guy had his feet on the table where other people eat food, the other one got angry when we passed 1 m away from him. ( This was the only way to see the garden, it is a small place) We also noticed that there was a lot of place outside to the contrary of what they said. We quickly left this place and it occurred to us that we might have simply not been dressed and qualified as the type of the hotel. My wife was dressed very well. I was in a 3/4 with a sweater and my two kids ( 17 and 20) were in blue jeans with classic polo shirts. We were dressed like every other normal person. So if you want to be in a hotel with this kind of people, make sure you are dressed Business, however if you like to feel comfortable when you go to a hotel with a wellness installation and you are not arrogant and snobbish and your wife doesn't criticizes your neighbors shoes then this is not the place for you. I travel extensively and never have I been treated anywhere in such a way.