The room was perfect for what we needed - good central location, easy to access via public transport and walking distance from shopping in Oxford Circus and Hyde park. Only thing to note is the room is a lot smaller than it looks in the photos and slightly awkward - but otherwise nice design and very comfortable bed. We also loved the white noise machine!
Walking through the Costa to get in to the hotel is a little weird and does feel slightly insecure knowing that anyone could get a lift up to the rooms... But this feeling was subsided by there being a security guard at the Sonder entrance every night - they were always super friendly too.
Definitely good value and worth it for a few nights!