We had a great stay at the concrete. It felt so new, almost like we were the first people to stay there. Maria was so hospitable and met us late at 11pm to let us in and showed us round. She was also on hand round the clock should we have needed her.
Such a stylish place, comfortable bed and great shower/bath.
Only setback was that it was SO noisy on the street outside. On our last 2 nights (over the weekend) we didn't get much sleep (even wearing ear plugs). there is no helping this but if you aren't a party animal and value your sleep, you may want to bare this in mind.