All-in-all I'd say our visit to Sonder was just mediocre. The room was well decorated and efficient but much smaller than I imagined. The shower was so small it felt like you might drown under the water because there was no escape if the shower head was turned on. Security was a concern though. I wasn't expecting to have to walk through Costa every time we wanted to go to our room. The hallways to the rooms and elevator weren't locked for non-guests. Any customer of Costa could have walked onto our floor. The neighborhood wasn't somewhere you'd want to spend a ton of time but there was easy access to a subway that would quickly take you to most places in the city and the host was very communicative and went to extra lengths to help us check-in early. I don't think I would stay here again but for someone looking for a place to sleep while they spend most of their time exploring London, this still might be a good option.