After almost 8 yrs. of travel nursing I can tell you with certainty that you'll get what you insist on!
Decide what you want in terms of housing (within you housing budget, of course) and settle for no less.
Some agencies will provide "corporate housing" if that's what you want, complete with linens, pots & pans, microwave, etc. and it will be similar to a hotel room. But, if you prefer an apartment complex with all the ammenities (pool, gym, etc.) there are only a few places in the country where that is not available, usually only in very small towns.
There are some great sites on the web that allow you to look at the pictures of the complexes ahead of time, floor plans, ammenities, etc.
Once you start traveling, the first rule, wheather it concerns pay rate, location or housing, is KNOW WHAT YOU WANT AND ASK FOR IT...Most reputable agencies will work hard to guarantee your happiness and a successful assignment. Good luck!