The location is unbeatable - being attached to the Cosmo is a real treat for the price you're paying. The space very comfortably fit 6 of us and it was nice to have a kitchen island to drink and eat at. The bathroom was definitely outdated and there is no real view/light, but if you're just looking for a place to stay/sleep, you can't complain. Check-in was a bit tricky but full kudos to the StayTogether team for being very quick to respond and help when you need it. Only thing to mention is that access to the Chelsea pool is def not guaranteed, we tried to put our name on the list the day before but it was already full. Weekends are tough so don't rely on the access as your way in.
Overall a great stay at a great location, would come back.