junior is already doing better... he's a lot less flinchy than he was and is eating fine. he's also started "asking out" of his enclosure and exploring and patrolling "his" new place.
torts in apartments... well, junior is my only pet, and is still quite small at nearly 3 years of age and roughly 6 inches or so in length. i make sure that he gets proper uv lighting and heat in his enclosure, but i also like to let him take walks outside. i'm thinking of eventually making our patio tortoise-safe for him to enjoy as well when weather permits.
our complex was completely fine with him and didn't charge us a pet fee/deposit. many people think turtle/tortoise and have a mental image of a harmless, nondestructive pet, thankfully. like someone else said, just be honest with the leasing offices you deal with, and hopefully they'll be cool.
on an unrelated topic that you mentioned, i have friends who were musicians and lived in an apartment, and what they did for band practice was pretty innovative (or so i thought, anyway) -- they rented a storage space. the owners of the place didn't care (who complains about noise in a storage facility?), and it had elextrical outlets in it and everything. just a thought!