When staying in downtown San Diego there are a number of Marriott properties to consider. I have a couple of past-due reviews to add, but thought I'd summarize my findings on the downtown SD properties first San Diego Marriott Marquis & Marina (Cat 7) Two towers, north has more balconies, the south tower has the lounge. In addition to being right on the water (wonderful views) it's just north of the convention center. San Diego Marriott Gaslamp Quarter (Cat 6) Has a lot of great reviews and a great location with upper floors peering into the SD Padres baseball stadium, but no pool. Many posts comment about being a "Gaslamp person" or a "Marina person" – I never understood what that meant, but I'll add it for those of you that do know. Coronado Island Marriott Resort & Spa (Cat 6) Some reviews mentioned it's a bit sterile/too futuristic, others liked it being more isolated, out on the island. There are ferries that run between the marina & Coronado Island. Also note the "Resort" in the name - which means no breakfast for elites. Courtyard San Diego Downtown (Cat 5) To be honest, I didn't research as I avoid Courtyards as they don't offer complimentary breakfast to elites. Residence Inn San Diego Gaslamp Quarter (Cat 5) Nice hotel and great location (less than a block from the Marriott Gaslamp). Small outdoor pool with gym nearby (must go outside to access gym). Residence Inn San Diego Downtown (Cat 5) Nice hotel and close to the Zoo & Maritime Museum. The Gaslamp district is within walking distance but it's also near the Trolley.