We loved our stay at Mary's guesthouse. It's only just been built, so is immaculate, but still feels homely. The beds are super comfy & the blackout blinds ensured a great night's sleep :)
The location is amazing - there's loads of street parking, and its really quick to get downtown & to the beaches.
Mary is a great host; very friendly, helpful & quick to respond to any queries we had about the local area etc.
A highlight for us was the beautiful sunsets we got to witness from the lovely roof deck - we miss it already!
We'll definitely stay here again if we visit San Diego in the future.