I started early because I knew that June would be a peak traveling season and hotels could get booked fast in SD. That and I'm a bit OCD :). With 4*s on a non-opaque site being a bit out of my range, the Doubletree appeared to be the best affordable option. I will definitely take your advice on booking the refundable Doubletree (with your link), and seeing what I can do down the road on a 4* from PL. The advantage I found that the Doubletree has over the Sheraton is its proximity to the trolley and shopping centers (both hotels look comparable in price, reviews, amenities). We're going to try to get by without renting a car (we'll use trolly and taxi), so the trolley being across the street was a big plus. Advice I'd request at this point is the next starting dollar amount and increments to try on a 4* Downtown on PL (first attempt, I went from $93-$125, $3 increments). Your wisdom has been greatly appreciated.