I've been to Le Semana,but not the Seton.
The Deauville on 29th just east of Park is both cleaner and less expensive than La Semana ($50 for 4 hours-cash no questions asked). Because it's primarily a tourist hotel,the rooms are larger and cleaner than LaS.
If the women desk clerk is on duty and you tell her you're down with Dr J,you get a free condom with your room.