Hi...looks like a very important consideration will be some privacy and "space" for both of you. That is if he is a normal typical 16 y/o!!
I would suggest looking at a 2 bedroom 2 bath condo that would give you both a pvt bath. Yours would be off the master and his would most likely be the hall bath...You would both have your own space, a living area and a nice community pool.
Honestly, if you wanted to spend about 90-100 a night you could get your own 3/2 home with pvt pool...
If hotel is the only option, I guess I would look at Embassy Suites Lake Buena Vista...these room will run over $150 night and have just one bath...
To check out condos, go to
www.villas2000.com and search under condos only in the Disney area...you can do the same at
www.vacationrentals.com or if you want a management company try
www.villadirect.com.
Really new fancy condos will be Windsor Hills, Windsor Palms.
Newer less fancy but very nice will be Villas at Sommerset, Villas at Island Club. If you are going to do Universal and some Disney, I would not stay on hwy 27 or farther east on 192 than Lindfields.
Good Luck and let us know if questions....I really think the pvt bath off your bedroom is the way to go...and cheaper than the big suite hotels...
Grandpa Ted