Mattress for holiday letting

Hi both Impressed with your website and business ethos. Advice appreciated. Am currently converting a small farm building into a holiday cottage in Northumbria. We hope to let out and use ourselves. We have a 14 yr old son who is cuttently 6ft 3ins so are looking for a long singleor 3/4 bed for the room upstairs in the eaves which will also house another single bed. I noted in one comment that you can reduce the height which is a good option. I'm looking for a reasonably priced ?

7ft long bed for my son (and any other tall people) used on a temp/holiday purpose. We use a Vi mattress-guide/" title="spring">spring bedstead mattress (bought in a sale!) which is wonderful and would like similar quality mattresses. Thanks, .