Valentina’s “nest” is a tiny but spotless nook in a terrific, lively part of Rome. While the amenities are bare-bones — no bottles of water or wine to greet the guest as in other Airbnb rentals, and no full-length closet for hanging coats, suits or long dresses — the place is beautifully maintained and comfortable for a short stay. I spent a nice cozy night there and found it perfectly adequate to my needs.