From the airport, you can take bus 28 into the town centre. It takes around 40mins and costs 3,25 AR$. Taxis from the airport cost 75 AR$ to the centre of town.
From the bus terminal, you can take a number of bus services into the centre of town including bus 21 and 14, or catch a taxi which will be around 45 AR$.
As of May 2016, trains to/from Buenos Aires are no longer running. There is however a modern international train making the short trip over the bridge to/from Encarnacion (Paraguay).
Posadas is on Road 12, connecting Corrientes and Puerto Iguazu. There is plenty of traffic and it is easy to get there. You'll possibly be dropped at the roundabout on the outskirts. Take a green bus to the transferencia (13,25 ARS, Jan 2017) and with the same ticket, a yellow bus to the city center.
In town you will find plenty of taxis and buses, but the best way to get around is on foot.
Bus journeys cost 10,25 AR$; 13,25 ARS if traveling to the suburbs (Jan 2017).
On the Paraguayan side, there are three more sites that can be visited on a day trip: Santisima Trinidad, Jesus de Taravague and San Cosme y San Damian (G. 25000 for the three sites, lasting for three consequtive days, Des 2016). From Encarnacion bus terminal, take a bus to Ciudad del Este (approx. G. 10000) and hop off at the entrance to Trinidad. From there, walk back to main road and turn right to the petrol station and then left along the "Paseo del Barro". You can take a bus there (not running on Sundays) or hitch hike to Jesus de Taravague. From San Cosme y San Damian, take a bus from Encarnacion bus terminal to Asuncion, stop at the junction to San Cosme y San Damian and wait for a bus (G. 5000-7000) or hitch hike.
For Teyu Cuare, go to San Ignacio Mini and at the very entrance to the town, turn left on a petrol station. It is about 7.5 km from there and there are signs. It is possible to camp at the park for one night, but there are not many facilities, or to camp in nearby conventional campsites. For Canadon de Profundidad, go to Candelaria (bus to Candelaria from transferencia in Posadas, 13,25 ARS – take any local bus going to transferencia, ask for Candelaria so you pay the right fare and transfer at transferencia with same ticket). When the bus turns left for Candelaria, get off and walk right to Profundidad. It is 13 km from the junctionin Candelaria, approximately, and it is possible to camp three nights at the park. There are toilets, picnic tables and barbecues. There is a waterfall and it is possible to bath in the river.
Same day Paraguay Visa
(Note that British and South African (and I believe most European) passport holders do not need a visa to enter Paraguay)
The Paraguay Consulate in Posadas, Argentina is in a small, orange, old colonial house a couple of blocks from the town center at 179 San Lorenzo (the street numbers were changed but the locals still prefer the old numbers - the new number is on the 1500 block) between Santa Fe and Sarmiento. There is no sign on the building, just a Paraguayan flag (red, white, and blue broad stripes) hanging in front with the old street address - 179. I entered the air-conditioned consulate on a Monday morning and there were just a few people inside and I didn't wait more than a minute, not like the chaos at the consulate in Buenos Aires. The requirements for American citizens are to get 3 photocopies for each of the following:
1. Passport Info Page 2. Argentina Entry Stamp (in passport) 3. A credit card (only front side) 4. Round-trip transport (it appears you can´t just buy a bus ticket to Encarnación from Posadas - in the unlikely event they do require proof of onward travel you could book a tour to the Jesuit Ruins just 30k inside Paraguay from one of numerous travel agents in Posadas)
In addition to the above you need to give them 3 passport photos which you can get along with the photocopies at a shop right next door for US$4. A single entry visa cost US$65 and a multiple entry visa costs US$100 in cash only and they provide change. You then fill out a simple one page personal info form. (if you make a mistake and cross anything out like I did you will have to fill out a new form) After about an hour he will ask for your right thumb print on three pages which you will also sign. Even though there was a Yellow fever outbreak in Paraguay there were no requirements or even notification. I got a free yellow fever shot at the hospital two blocks from the bus station in Encarnación, after I crossed the river into Paraguay. The whole process can take around 2 hours.
The frequent(every 10 minutes) and crowded local bus is clearly marked "Argentina - Paraguay" or "Servicio Internacional." It costs 11 AR$ and you can catch it on Entre Rios, just a couple blocks south of the town center.
Beautiful artesanal objects handmade by the Guarani Indians. You can find them at Plaza 9 de Julio in downtown Posadas.
Along the city's riverwalk, popularly known as "La Costanera", there are plenty of great restaurants like Doña Chola, La Ruedita, Barlovento, just to name a few. Most of these restaurants have a wonderful view of the Parana river.
•Cremolatti. Nice ice creams, slightly pricey but worth trying. WiFi in the shop. Alfonso de Arrechea 892 has a quiet terrace near the Costanera; La Rioja 1912 is located in the center of town, without a terrace.
The most popular bars in the city are: Bocatto, Español, Bahia, Vittragge, Mentecato, Status and Barlovento.
Hotel Continental, Hotel Posadas, Hotel Libertador, Hotel Julio Cesar, etc. Complejo La Aventura is for those who prefer to be in direct contact with nature.
Posadena Linda (Bolivar 1439). Private double room with bathroom and basic breakfast is 370ar (May 2016). Clean, friendly and recommended.
Note that the as of May 2016 the prices below are no longer correct. Inflation is rampant. Expect to pay three times the figures listed.
Encarnación in Paraguay is a frequent, crowded, and cheap (6 ARS/6,000 PGY - US$1.25) local city bus ride away which you can catch from the town center. From Encarnacion bus terminal you can take a bus the Jesuit Missions of Trinidad and Jésus about 40 minutes away (7,000 PGY), or onwards to Asunción, 5-7 hours (~70,000 PGY).
Esteros del Ibera can be reached by hiring a private 4x4 with driver for ~1,000 ARS one way. A slightly cheaper option is taking a bus to Virasoro (1,5 hours - 34 ARS/person) and get a car from there ~700 ARS.