While we were really looking forward to our stay at Sonder Barcelona, we were very disappointed in Sonder’s customer service. When we first walked into our room, the room smelled strongly of chemicals. As soon as the chemical smell wore off, a pungent vomit smell emerged. The smell became worse and worse when we would leave the room because the AC turns off when you’re not in the room (this is standard, which would have been fine had there not been a foul smell). I reached out to Sonder’s customer service multiple times and they told me they took this issue “very seriously” and they would send someone over, assuring me that the problem would be resolved. A woman showed up with air freshener, a rag, and a bottle of cleaner, asking me where the vomit was. I explained to her that it was not our vomit but rather from the people who stayed in the room before us and we did not know where the smell was concentrated. This is a serious health and sanitary concern and she told me we could not be moved to another room because they were full. The smell did not go away and just got worse so we reached out to Sonder again. Finally after two days of trying to get them to take the problem seriously, they offered to move us to another hotel significantly farther from the main area of the city that we were originally staying in. We decided to leave a day early and found another hotel. I would recommend booking with another hotel or using individual Airbnb owners, rather than this corporation that does not care for their customers adequately. I would like to stress that our main issue with the hotel was not the smell itself (albeit concerning), but Sonder’s failure to properly acknowledge the problem and provide adequate customer service in response.