1.We always try to use LAN AIRLINES, and were pleased with them to Iguazzu Falls.
2.There is a bus station in the center of this tiny town - with good service to the Falls,and the taxis were inexpensive.
3.Puerto Iguazzu to the Falls was ~15 minutes; we also took a taxi from there to the Brazilian Side of the Falls (May Need A Visa depending on your Citizenship)and that was ~45 minutes, with customs check...we found it very worth the time and cost of Visa; then we visited the Bird Park on that side of the Falls.
4.Our hotel was only fair: I have heard very good comments about both Los Truncos and Secret Garden - so worth your checking into, IMO.

You didn't ask, but, a very good restaurant (perhaps the best) in town is La Rueda. You won't be disappointed.

We loved staying in town. Enjoy your trip.
~MarnieWDC

Thanks, MarnieWDC!! Excellent information. And thanks for the restaurant recommendation. I've looked at Secret Garden, but will also take a look at Los Tuncos. Thanks, again!

We stayed at http://www.marcopoloinniguazu.com/ which is very convenient as it is in the main street close to the bus station. It is basically a hostal but most of the rooms are private en suites and are spacious and comfortable. The staff are particularly helpful. The hotel does run tours to the falls but it is very easy to get there by bus (and a lot cheaper!).

If going to the Brazilian side of the falls (highly recommended!), as marnieWDC points out, a visa is required for some nationalities, notably US and Australian citizens. That said, when we were there in 2008, nobody was checking and most people just stayed on the bus (on the advice of the driver) and bypassed immigration. The Town of Foz is a pleasant place and worth an hour or two, different food and a great palce to buy semi precious stones and jewellery. The views from the Brazilian side of teh falls are different, much more panoramic, compared with teh Argentine side where you get very close to the falls.

There isn't a great deal to see in Puerto Iguazu, the only real reason to stay there are the falls. There are some ok restaurants in town, incluidng the one in the bus station which was surprisingly good.

Some more info and photos can be found on our blog

http://www.travelpod.com/travel-blog-entries/candcthai/1/1226750400/tpod.html
Have fun, it is an amazing experience,

Thanks,crellston. We were hesitate to go to the Brazilian side because of the cost of visas (we're US citizens), but maybe we can stay on the bus and see that side, too.

Do remember, kwood1955, that this is taking a chance - it is not within the law. I know several people report having done this with no ill consequences, but trying to cross back without a Visa could lead to problems...not worth the $$, IMO.

~Marnie