The only reason I gave this hotel 2 stars instead of 1, is because I was traveling with a 14 month old baby that was sick, and I know that part of my negative experience was that. I will also qualify this by saying that we went there on the recommendation of our group's travel agent, so I assume other people have had positive experiences.
The big positive of the hotel is that it is set on a beautiful hill overlooking a valley amid vineyards and hazelnut groves, where you can see the Alps in the distance. Absolutely a stunning view. Now the negative...
1. We had originally booked a suite, but something with the sliding doors must not have been able to seal properly, so our suite was open to the stink bugs. Apparently late October is typically when stink bug season starts, but this year early rains brought them early, and so we went into the room to find a couple dozen stink bugs in our room. We told the hotel and at first, it was as though they didn't believe us. Like we jsut had our door open and were upset they were coming inside. Rather than the fact that the door just didnt work to keep them out. Eventually the hotel came to remove the bugs, but within minutes there were at least a dozen more. I dealt with them that time, and minutes later at least a dozen more. We wouldn't have wanted to deal with a room that couldn't seal out bugs at a motel 6 and definitely not at a hotel room where basic rooms are more than 600 euros on a weeknight. We asked to switch rooms and they switched us to the only room that they had available. which was one of their basic rooms. It was a shoebox of a room that really could not accommodate a crib. We had to place it in the hall just inside the door so we squeezed through between the crib and the wall to get to room (btw, the crib was 50 euros per night). The room was so small that the bed takes up almost the whole space and there was essentially no room for our baby to play on the floor. The hotel continued to act as though this was not a major inconvenience, but did eventually send a bottle of wine to our room as an apology after the travel agency complained to them. We were dealing with a sick baby so we never even drank it. I will say that the rooms came with beautiful balconies that were a major part of the space of the room. However, even if the door was working they were so full of stink bugs that they were essentially unusable. This wouldn't have been true if stinkbug season had come later or we had come earlier, and this would have made the rooms much nicer.
2. Part of the appeal of the hotel is the location, but it has a major downside. It is isolated enough that you can't get a cab so any plans need to be made in advance and getting a car to take you down the hill will be 200 euros. So you can't do anything impromptu.
3. Dealing with a sick baby and only one restaurant on site that is pretty fancy and slow, not ideal for a baby, I was ordering a lot of room service. I found the room service menu to be small and mediocre. I will say that the salads, however, were excellent.
4. I generally felt unwelcome with a baby. I felt like the staff did not want us there. Definitely not family-friendly.
Ultimately, the hotel is just not nearly good enough to justify the price tag. Choosing between that and a Hilton, I would choose a Hilton 10/10 times. If you are choosing between Casa di Langa and another luxury hotel, choose the other hotel.