The hotel is clean and reasonably comfortable. But the management has taken the opportunity of having a totally captive group of customers under quarantine to engage in extremely noisy structural renovations. The drilling through concrete starts at about 8:30 a.m. and continues with only a brief lunch break until 4:00 p.m. Day after day, the noise is deafening and the vibrations can be felt across the desk. You cannot work, read, watch TV, listen to music, or nap during the entire work day. Quarantine isn't so bad but they have managed to turn the rooms into torture chambers. Do yourselves a favor and find a quarantine hotel that actually cares about their guests. Green World Linsen is part of a chain, so I suspect similar problems exist elsewhere in their chain.