Sounds like what you need is a travel guitar. The "Go" guitar is a real winner. I got one recently, and it's outrageously good. The bass is not quite as strong as a full-sized guitar, but it does sound like a real guitar!. Surprised the heck out of me when I first played it. A much bigger sound than I expected (I got the walnut "Grande" model). Also, since it's small, I keep it handy all the time and pick it up and play it in odd, idle moments or whenever the spirit moves me, which is often. They make both steel-string and nylon-string models, and an option is a Fishman Matrix pick-up (I didn't get that). They also make a terrific padded gig-bag for them. Check it out.

I've heard that there's rarely a problem flying with them and they fit okay into an overhead, but Lord knows whether that hold true these days. The gig-bag looks like you're carrying a rifle.

Also, if you're worried about getting grief for playing in a hotel, Segovia said that since he had to do a lot of practicing in hotels, he'd roll up a clean handkerchief and slide it under the strings up close to the bridge. Muffled the strings and gave them a sort of pizzicato sound. I once spent a fair amount of time in a hospital, and I used to practice a lot late at night using the handkerchief trick. I could hear it, but the nurses out in the hall couldn't.

Don Firth