I stayed at Diana's casita for 9 days on a business trip. The studio was very quiet, spotless clean, and modern, with plenty of natural light. It's in a great location with only 5 minutes of walk to the College Ave, where you can find plenty of great restaurants, about 10 minutes of walk to the Rockridge BART station, and 20 minutes to the trendy Temescal Alley and Telegraph Ave.
Diana was a very friendly and responsive host. She prepared clear and welcoming guides, and always fast to respond to my messages. The only small issue I had was a trail of ants migrating inside the room because of the rain. Diana and her husband came over immediately and resolved the issue, really appreciate that.
I would definitely recommend Diana and their casita.