We stayed in hotel L'Isard for five days in July, 2011. The triple room was quite big and very comfortable for our family (2 adults, 1 teenager, 2 dogs), and very clean. Airconditioning was really a must, because the weather was VERY hot, and luckily the airco worked perfectly. The beds were big and comfortable.
There was quite a lot of noise from the street below, so if you are a light sleeper, you might find this a bit irritating. We couldn't hear anything from other rooms, though, so overall it wasn't a too noisy place.
Breakfast was excellent. We ate in the hotel restaurant several times, and found it to be good as well. The location of the hotel is very good, it's in the middle of the city, so there are lots of places to see.
The only minus that I can think of was that we had booked a parking place in the garage, but for some reason that booking wasn't successful and we had to look for a parking place outside - which is not easy! There were some parking places in the next street, parallel to the Meritxell, in the hillside.
Overall, a very nice experience. If we return to Andorra la Vella, we would consider staying in L'Isard again. The staff was also very helpful and friendly, and that always gives a nice touch to the stay.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC