Had a great one-night stay at T23 and wish it was longer!
Spotless room with clean-lined, modern furnishings, spacious bathroom and wonderfully comfortable bed. Outstanding service from the valet, to reception, dining room/bar and room service. No pool but if you don't mind braving the fresh waters of the Pacific, the hotel will lend you beach towels.
Great location right on the beach, with a great beach-side walking/running/cycling path for the energetic. While safe, the area is a little grimy with a 'frat boy/party town' kind of vibe, which means the food options nearby are price-driven and limited in quality (Denny's anyone?) although we did find a decent sushi restaurant close by. For quality food you'll need to get in the car and drive up to La Jolla, only 5 minutes away.
Overall, we highly recommend this hotel and would definitely stay here again if in San Diego.