I cannot recommend Mary's place highly enough. We travel to the Pasadena/Altadena area all the time and know the area well. You are close to the freeway but tucked away up in the foothills. The neighborhood is quiet, parking is easy, and the studio is very well appointed.
I recommend Mary's place for business travelers, individuals, or couples visiting the Pasadena area. Those who love the outdoors will love being so close to the San Gabriel Mountains.
Finally, Mary is simply the best host. She has thought of all the touches and amenities. Check in is easy, and she is perfectly communicative. I will not hesitate to stay here again and again.