Have just returned from 3 night stay and throughly recommend the Las Arenas Balneario hotel. The hotel is beautiful looking and just as good inside. Super location next to the beach and only half hour from the airport, City centre 20 mins away by taxi.
Room was first class and cleaned twice a day with nothing to much trouble for the hotel staff.
Hotel also has excellent spa and a very well equipped gym.
This is a modern hotel close to the conference center, with excellent facilities, The staff are multi-lingual, very friendly and helpful. Check in only took 5 minutes.
The rooms are very comfortable, with free WiFi.
The food is excellent.