If a suite isn't located on the club level, you need to check the description to see whether it includes lounge access. It can go either way. I know of a new HR that does give lounge access to all junior and senior suites; in this case, the rules are buried in the way the property lists all suites as being club level even though there are suites located on every floor. In other Hyatts, I've noticed suites and club suites listed as separate room categories at different prices, where I would expect DSUs to book into the lowest suite category so that a use of a DSU would not imply lounge access for guests who are not Diamond.