Swimming Spa
It is hard to choose between a spa and a swimming pool. Well I have a solution for you. A swimming spa could be just what you are looking for. A swimming spa is a large spa that can entertain up to 12 people. In addition many models of swimming spa have exercise jets so that you can swim against the pressure and swim laps in a very small space.
If you are considering buying a swimming spa then click the link to find a list of swim spa suppliers.