This would have been a 5 star review until the day of checkout. While the space is beautiful and everything it was indicated to be - beautiful, clean, great location, well renovated and everything working great, on the day of checkout we had an unpleasant issue. The check out time was listed as 12 pm, and we expected to be able to check out at noon, we did not ask for a later check out as a courtesy. Around 10:30 am on the day of check out, the host knocked on the door and asked if we had left yet, and we explained that we would be out by the noon checkout that was listed and agreed to. The hose indicated we should have been out by 10 am. All fine, except 1 minute after the host left the smoke alarm in our unit went off and would not stop. Neither of us smoke, we did not use the oven, nor the toaster, and there was no outside work that would have generated smoke or dust to trigger it. Needless to say, the alarm only went off in our unit and no others nor in the hallway, and no one working seemed to be concerned about it or check on it. Needless to say, we spent the last 10 very noisy minutes in the unit hastily gathering our stuff and were certainly out by 11 am. Coincidentally, the local ( not affiliated with airbnb) airbnb service company arrived while we were waiting for our uber around 1055-11 am and gathered linens etc to be serviced. Anyway, it ruined an otherwise great experience. Had we known in advance they needed the unit back earlier than advertised, we would have gladly taken an earlier flight from CDG to Barcelona and vacated the unit earlier.