Annabelle's studio is fantastic. I attended an weekend long event (and stayed a bit after) with a friend in Pasadena and found Annabelle's listing just up the road in Altadena.
The location was perfect. It was peaceful and secluded, but was an 8 minute drive away from all the amenities such a grocery stores, and also a 10-15 minute drive drive from Old Pasadena.
The space itself was accommodating, more than enough for our week long stay. If you're staying long-term, this studio is great option, with a spacious bathroom and kitchen, not to mention the living room/bedroom which felt so open and airy thanks to the high ceilings and skylights. There are also washer and dryer as well as a big closet and dresser to keep said clothes.
Annabelle was a delightful host, too. She was very responsive, courteous, and helpful with any questions or needs my friend and I had. She provided a lot of resources in the apartment that answered any questions you have in regards to the Altadena area and the studio itself.
Overall my experience at Annabelle's studio was a great one. I think the space will work for anyone whether you're staying for a short-term or a long-term stay. I would not hesitate to come back in the future. Highly recommended!