Buenos Ezeiza Airport is the gateway for the Cities Portenos to other Argentine Cities and to other Countries in Latin America. Set close to the river on the north east side of the city, it is easily accessible by bus from the centre of the city.
I would suggest that it is not wise to walk as BA is much larger than it looks and the block system whilst easy to navigate can lead to complacency meaning that somewhere 7 blocks on the map looks close but realistically isn´t. I would also suggest wherever you are in town get a radio taxi as it´ll cost less than 20 pesos (4 uk pounds) to get from the centre of the city to this airport. However only get cabs with Radio Taxi on the top as other kinds of cabs do prey on gullible tourists and also to avoid, shrugs and dirty looks ensure you have enough change for the journey.
BA is notorious for problems with change, therefore offering a 100 peso note (20 pounds) for a 20 peso journey will at best get you a dirty look and at worst a few choice words + a dirty look.
The airport itself is modern and fairly small, it overlooks the river plate and is always busy, downstairs, you can check in and will have to queue with loads of fashionably late portenos, the queues subside quickly and the staff are really helpful with a smattering of English to help those without the requisite Castellano language skills, there are also signs in Spanish and English to help us Gringos on our way.
The airport caters mainly for internal flights with Aerolineas and LAN Airlines and offers flights to a variety of destinations including Santiago, Bariloche, El Calafate, Iguassu and Mendoza, all are worth checking out and most flights are around 2-3 hours maximum.
To keep you diverted before going through the customs check there are restaurants offering American, Chinese and local cuisine as well as a book shop a duty free shop and a few shops selling touristy type wine, mate gourds and expensive looking jewellery.
Once through the bag check its easy to find your departure area and then you can get a coffee in the coffee shop or just sit back and wait for your flight.
Generally its recommended for internal flights to be at the airport at least an hour before departure to ensure you don´t miss checkin and flights are generally on time and reliable. The facilities are limited but enough for the short wait. Overall its a nice, clean airport where the staff work hard and the facilities meet requirements fully for any type of traveller. Be aware that the weight limit for cases on most internal flights is 15kg, so if your travelling the continent you need to consider this before lugging your heavy old rucksack in for a flight.
I flew into (but not out of, because I was on a round the world trip) Buenos Aires, landing at Ezeiza airport (full name: Ezeiza Ministro Pistarini International Airport).
The airport is about 20 miles outside of the city centre, which I think is quite a lot. However, there is a bus (just one,as far as I know), that goes from the airport to Plaza de Mayo, in the centre of the city, (and goes to the airport, from Plaza de Mayo). This is obviously a much cheaper option than taking a taxi, but of course a taxi would take you also. (You have to be careful taking taxis in Buenos Aires, as there have been reports of tourists being mugged.)
I didn't spend long at the airport as I had just landed and had no reason to hang around there, but I did think that it was clean and reasonably pleasant. I needed some local currency and I found an ATM that was open (even late at night when I landed).
From what I remember of the airport, I thought that it would be accessible for a less able bodied person.
One thing that you might want to think about, if you are flying into or out of Buenos Aires, is that the staff apparently open bags and steal things (this happened to other people that I met when I was in BA). Therefore, I would just make sure that your valuables are in your hand luggage.
The code of this airport is EZE.