We stayed in the unit for a week. It was the perfect location for us, as we visited many area's of San Diego (La Jolla, Solana Beach, Ocean Beach, and Downtown), so it was centrally located, but still on the beach.
The boardwalk right downstairs was perfect to start the day walking to get a coffee or breakfast at 'Kona' (great little place right at the entrance of Crystal Pier). Of course it was also great to be able to walk down to Mission Beach, too.
My only negative, was the unit had a very musty smell, I assume it was because of the age of the building or pipes. However, when we opened the windows which was 100% of the time we were in the unit, it cleared the smell. Only when we came back from being out, and the windows had been closed did we have the strong smell of it.
A positive for Nancy's Vacation rental staff: upon arrival we noticed some of the towels were dirty or stained, and they brought us new towels right away.
Overall it was a great stay, should our travels lead us back to San Diego, we would definitely look at this location as an option!