We did not actually stay here, but we visited their guest house to talk with some people actually working in Assisi.
This guest house is run by nuns, but don't let that put you off. We're not Catholic and they welcomed us. They are trying to provide hospitality to pilgrims, so the place is quiet, and they do require that you stay at least 2 nights.
They have a chapel and a lovely quiet garden, where you can sit, contemplate one of two extraordinary statues of St. Francis (the dancing Francis in the entryway is the nicest), play a quiet game, or read a book. You can look out on the Umbrian countryside (they are at the top of the hill, looking down at the Santa Chiara church) or wander their gardens, which do provide food for the guests and the sisters.
As they are American and Canadian sisters, they do speak English. Rooms are simple but comfortable. This is a lovely place to stay.
The website is at www.graymoor.org/sisters/retreathouses.html