This is a fabulous place for a single person or a couple visiting Pasadena. The neighborhood is lovely, and the space is a clean and charming garden flat in a well-kept back yard.
The bed is comfortable, the shower is great, and the whole setup is really nice. The hosts are friendly and helpful, but also give you plenty of privacy.
One thing to be aware of is that this is a place where you need to be willing to eat out much of the time. There's no kitchen in the apartment (basically just a microwave, bar fridge, and coffee maker), and very little in the way of kitchen equipment or counter space.
We knew this going in, so it didn't affect our stay at all, and the listing does offer the option of using the grill in the backyard. Just note that, if you're the sort of person who likes to save money by cooking your meals in the apartment, this place might not work so well. But Pasadena does have some great restaurants, so there's plenty of choices available.
All in all, a great place. We'd definitely stay here again.