The only issue with a platform bed is the height. Some older guest have a hard time getting out of them and if you use a Temperpedic mattress, it will be even more difficult. A latex mattress will work better. I would try sleeping on one for several night before you commit to buying or building one. Our 32 year old son has one and loves it but I have a hard time making it with I visit him (I know - why am I making his bed?). It is hard on my back to lean over that far. The good thing about platforms is that they look great with just a bottom sheet and a duvet with cover that can be laundered very day. If you get one with slats, they have a tendency to move when you make the bed. Look for the ones that are attached to each other with bindings like they do in Europe or use a bed board for support. You also need to look for a frame the holds the mattress in place. Some are so flat that the mattress moves around and that is not very safe for your "active" guest. Just food for thought..