I have generally been pretty happy with most hotels I have stayed in (check my other reviews), including past experiences in Buenos Aires. The Dolmen, while not a disaster, has a number of shortcomings that would have made me reconsider, had I known.
1. Noise - this is my #1 complaint. The hallways are tiled, with no sound absorbency. The doors to the rooms are extremely lightweight. *Any* sound from the hallway is transmitted including people walking, children, the cleaners, the lift, telephones... So far, this hasn't kept me awake, but it goes all the way up to bedtime and from about 6:30 am- so don't expect to sleep in.
2. More noise - I'm on level 14. Stay away from this floor. It is right under the pool pumps, and there is a constant drone. I've found it soothing, because it is constant, but others may not. Additionally, when they clean the water, it's intolerable. When I went to front desk 4 times to say it had to stop, they just shrugged (politely) and said it had to be done.
3. Food - breakfast is a generally below average affair- the scrambled eggs were warm and a bit grey. The rest of the food was adequate, but I decided to venture out this morning and for the rest of my stay to have something more enticing.
4. Standard of the room - the room is tidy and I imagine fairly hygienic. Having said that, the carpet is stained, and there was no plug in the bath. Bed is comfortable. TV is modern LCD. Wifi is actually pretty good.
5. Gym/pool- on the 16th floor, with great views of the district. However, 2/3 pools were not functioning. There was a small gym typical of most hotels (i.e., not really worth using). I'd steer clear, as others have.
6. Staff- friendly, polite.
7. Area- there are better parts of BA, but it' walkable to Recoleta, and there's a tube station nearby (if you haven't used the tube here, it's actually pretty easy and very cheap).
Overall, I'd be willing to accept everything else if the noise wasn't such a problem. That's really a major flaw in a hotel, and I really can't stress how annoying it is to hear *everything*. If you're a light sleeper, or value some relaxation in your room sometimes, I would advise you choose somewhere else.
Back of the hotel avoids street noise.
Level 13/14 probably bad for pool noise.
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This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC