well if the 4* looks like it is the sheraton it has an outdoor pool, but it's the closest you can get to 16th str the 4.5 star is a match for the Teatro, which I reccomend, great hotel. They have a hotel SUV that drove us to the stadium for a game and picked us up. No pool, but nice tubs in the rooms. the 3.5 star Boutique which is there but you don't have listed looks like the Magnolia, free breakfast and internet, but no pool your 3.5 is a match for Crowne Plaza, but the pool is outdoor and I know it's already drained for the winter. But they are the closet to the Diamond Caberet, which judging by your name might be a plus. :) the last one for the tech center, I do not think you want to stay in the Tech center, it's pretty far from downtown. You are not going to get free parking it you are close to 16th street. However if you avoid the hotel parking lots you could save yourself some money Also the Magnolia and Sheraton have great deals on Travelzoo, I would check those out first.