I've stayed here twice for business, both for extended periods of time, and found it a fitting location from which to explore Gijon and the surrounding area. Nearby park is very nice.
Rooms are Euro-small but modern and well-designed. Though rooms on the beach side have a nice view, they are also a bit noisier due to traffic (i am extremely sensitive to noise - it's probalby not much noise in reality) When i was there they were still working on parts fo the hotel (restaurant, etc.) but i managed to find the roof for a great view of the city and the beach. A great location for phone calls back home!
Room service was very good and rapid. Breakfast very nice. My tab was paid for by others so i have no idea if it were free or not. Perhaps it was my lack of Spanish ( i try, really!) but i found the staff a bit officious and lacking warmth.
As is common with this part of Spain, English is not too common, but the front desk staff did everything they could to honor my various requests.
Finally, however, the hotel is far removed from the old city and the center of town, and upon my subsequent visit i stayed in the old city and had a much better time, and, though the hotel in town was not as luxorious it retained the character of the surrounding area rather than the Abba's generic (though lovely) modern style. If you're in Gijon as a tourist, i recommend staying in town for this reason.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC