I stayed at the Quality Inn Plaza in 1993, and again with the kids in Easter 2007.
Relax, it's fine. Rooms aren't huge (beds are) but they're ok.
there's a few pools, the restuarant and bar is OK, and you're opposite the 'upside down house' Wonderworks.
It's a great location.
VERY close to Seaworld and Universal.........15-20mins (max) to Disney, on a very clearly marked route.
Loads of restaurants nearby, and we walked to them in the evening without any problems.
there's a Brannigans restaurant, PizzaHut and a great breakfast restaurant right outside the hotel. Brekkie (all you can eat for $6 in 2007 was a bargain, and they have an amazing choice of food).
the only problem we had in 2 weeks was 1 night when we had noisy neighbours, as the hotels by the new conference centre and there was a college/church choir thing going on that day. other than that it really was great.
The Brit guide book is fantastic. it has loads of maps and pics, but the tips about what parks to visit which day of the week was priceless info. Buy it asap.
If you've any other Q's just let me know.
Enjoy your holiday