Hi Liz .....
Although the rooms at Seton are quite sound-proof, not sure if the sound of a viola would carry through the walls. If I were you I would check with the Seton Hall hostess (it was Jeanine Samoy a year ago ..... do not know if she is still there or doing that.) and see about other rooms not in range of sleeping rooms.
My husband and I both had to laugh and said almost simultaneously, "she should do some busking down in the tunnel."
Actually, we had a wonderful experience following my first AN surgery at Duke-Raleigh Hospital. My husband was coming up the elevator after a trip to the Cafeteria, when a young woman got on the elevator with a cello case. She got off on my floor (my husband trailing behind wondering where she was going with a cello). She went into a room a couple of doors away from me. My husband came in to my room and was ever so curious about this. Soon we began to hear wonderful classical solo cello repertoire ..... for almost an hour. We found out later the patient's husband had arranged for this NC Symphony cello player to come play for his wife. What a treat we had!!
Clarice