Hi there MrDannyg,
I see some advice here about staying at or near Clearwater Beach. I have to throw up a caution there that really comes down to, "what is the primary nature of your trip?"
If you're mainly going down for ST Baseball, consider staying directly in Dunedin. The Best Western Plus Yacht Harbor Club Inn (be careful, there's also one in San Diego!) is at the Dunedin Marina. It fills up quick and you might already be out of luck for prime March times, but it is the one right on the water, you can see beautiful sunsets from the causeway and from the outdoor hallway that leads to all the rooms. The restaurant is top notch and theres' a great outdoor bar, and it's about a 2 minute walk to Dunedin Downtown. It's also adjacent to the parke where there are several festivals during March that are kind of fun. And you're a short stroll from Kelly's and most of the best downtown boutiques and restaurants. This hotel is also the closest major one to Florida Auto Exchange Stadium. It's about a 10-12 minute walk up the Pinellas Trail.
A little further down the road is a place I have also stayed, Beso Del Sol. It might have some timeshare stuff, but it's also renting rooms that arent' much to look at but they're comfortable, and they have little balconies, two pools, a Tiki Bar, and a view of the spectacular Sunset.
Clearwater Beach is BEAUTIFUL. I've stayed at the Sheraton Sand Key resort and it was really nice. Problem: iT's a ZOO during March Break or all of March, really, and getting over the Causeway by car is a pain in the ass. It's always backed up. And you will always have to do it to get to games in Clearwater, Tampa, or Dunedin. So if your primary reason is beach: Clearwater beaches are the best in the world. But if Baseball ranks higher, you are going to grow to hate that trip over the causeway.
At Florida Auto Exchange Stadium: The Behind Home Plate seats are good, but be aware that first, all the seating is not the same - these are bleacher seats and they have been replaced at different times and for whatever reason (as of 2015) the section 105, 104 seats are particularly small and uncomfortable. Also - the netting that covers the backstop is almost absurdly thick. LIke, 2X as thick as the netting at Rogers Centre/Skydome.
For my money, the best seats in the house are down the first base line closer to the clubhouse. -- section 102, 101. Lower row the better. This is where they walk to the clubhouse and also where you can get the best autographs. 103 also gets you behind the Jays dugout for tossed balls but you're not behind netting. Be sure to go to the clubhouse Season Ticket holder gate where they always have extra game day scouting reports which are useful because they list all the players and non-roster invite players by position and number -- if you care about who you're looking at.
The Jays stadium is rickety, but it's one of the smallest capacity ones left in Florida's Grapefruit League, so it's very intimate. If you stay in Tampa/Dunedin/Clearwater, you're also not far from the Yankees (30 mins to Tampa), Phillies (15 mins, Clearwater), and Pirates (Bradenton, about 1 hr.) Also check out Joker Marchant in Lakeland, about halfway smack between Tampa and Orlando. You'll have a ball.
Lots of great restos in Dunedin: check out Kelly's Chic a Boom room for atmosphere, Dunedin Draft House, Pan Y Vino, Casa Tina, Stirling Wine Bar, and the Dunedin Smokehouse
