The design -- alternating horizontal panels of light and dark wood -- at the Hilton in Stockholm almost gives me vertigo. Depending on where your room is, it can be a LONG hike to the club room.
The Sheraton is better located than the Hilton for most purposes but normal rooms and (unless they've changed it) the club room itself are quite small. Even the suites aren't huge by any means. But I too would pick it over the Grand.