The National Association of Diffuse Hotels' website (alberghidiffusi.it) is only in Italian, but it has links to 23 alberghi diffusi in the frame labeled "Alberghi Diffusi aderenti." Here are a few, including Sextantio, with nightly double rates unless noted.
SEXTANTIO, ABRUZZI The albergo diffuso's restaurant is open Wednesday and Thursday for dinner only, and Friday through Sunday for lunch and dinner. 011-39/0862-899-112, sextantio.it, from $252 with breakfast.
FORGARIA MONTE PRAT, FRIULI About 20 apartments and villas are scattered throughout several towns in the mountains near the Austrian border. 011-39/0427-809-091, monteprat.it, villas from $94, apartments from $110.
SOTTO LE CUMMERSE, PUGLIA All 10 apartments in the historic center of Locorotondo have modern amenities, such as TVs, DVD players, and air-conditioning. 011-39/080-431-3298, sottolecummerse.it, from $129.
TRULLIDEA, PUGLIA Twenty-five conical trulli houses—common in southern Puglia—have been turned into guest rooms in Alberobello. 011-39/080-432-3860, trullidea.com, from $135.
CORTE FIORITA, SARDINIA The colorful houses in the charming town of Bosa contain 25 hotel rooms, some overlooking the Temo River. 011-39/0785-377-058, albergo-diffuso.it, from $102.
VAL DI KAM, SICILY There are 10 rooms in Sant'Angelo Muxaro, a village on a chalk cliff that centuries ago was a necropolis. The hotel offers a pranzo diffuso, or "diffuse breakfast tour," which includes visits to a shepherd for fresh cheese and to a baker for bread and olive oil. The tour ends in a courtyard where a selection of pastries is served. 011-39/0922-919-670, valdikam.it, from $88, breakfast $39 with guide.
BORGO DEI CORSI, TUSCANY Ten renovated apartments are available for rent in Raggiolo, an ancient stone village in the Casentino mountains southeast of Florence. 011-39/0575-514-428, borgodeicorsi.it, from $700 per week.
LA CASELLA, UMBRIA This albergo diffuso includes more than 30 rooms in several 19th-century houses on 1,100 acres near the Tuscany-Umbria border. There's also a spa and an equestrian center. 011-39/ 0763-86-684, lacasella.it, from $220 with breakfast.