When we bought our TT we opted for a Murphy bed. The reason? We were towing with a mid-sized SUV, and we wanted to get the most possible trailer with the least possible weight. The Murphy bed option got us a reasonably-sized trailer (for the two of us) and allowed us to have both a "bedroom" and a "livingroom" in the same space. We put it down every night and up every day.
At first, our longest trips were the typical vacation 2-week or 3-week trips. Now that we're retired we're taking longer trips - 6 weeks or so. Putting the Murphy bed up and down is getting old. Plus, we are now towing with a half-ton pickup. We have much more towing capacity than we currently need. So now, I'm thinking it's time to upgrade to a bigger TT, and I won't be going with a Murphy bed.
Besides the up-and-down every day there is also the sacrificed storage space that would ordinarily be under a bed.
Murphy beds are great for certain benefits. But they do have some down sides.
-Speak