Depending on the Beach you could get there in 5-7 miles. Between 10 - 15 minutes depending on Time of Day.
The beach is close by car, less than 5 minutes but too long to walk.
The closest beach is Lauderdale by the sea, it's less than 5 miles from the hotel. The beach is clean, relaxing, not crowded at all.
Get an answer from Sheraton Suites Fort Lauderdale at Cypress Creek staff and past guests.