My girlfriend and I stayed for 3 weeks over Christmas & New Years and had a great time!
First of all, the location is perfect! You can walk to the coast in 5 minutes to watch the sunset, and it's only a few more minutes walk to get down to the sand and tide pools. We loved walking along the beach at sunrise and sunset! It's also perfectly situated to walk into town! We didn't do too much in town due to COVID shutdowns, the few times we did it was super convenient! Plus there was a tennis club across the street and it was easy for non-members to call up and reserve courts!
The house itself is very stylishly decorated and feels recently renovated and modern. We worked from home during the day and found the Wifi to be extremely fast and reliable throughout the house! We had a very comfortable time!
The water heater did break at the beginning of our stay, but these things happen and they were quick to install a new water heater and compensate us for the nights without hot water. Overall, the hosts were quite responsive and were always extremely polite and helpful!
Definitely recommend this place for a stay in La Jolla!