Have visited 3 times 2 times a couple years back . first couple times the food was great really nice meat the 14oz was more than enough.
but on our last visit it was not good - service very poor - people looked miserable and un friendly - went for main course only with with . my partner ordered 11oz rib eye and i had 14oz sirloin although when we got them hers looked bigger than mine! meat had lots of gristle and was clearly a lesser quality meat then before ! - you should live off your good reputation . by maximising profits and providing poor meats - £5 for a portion of chips lol ! i felt ripped off

I've lived opposite this restaurant for the last three years. In the early days it offered an authentic Argentine parilla experience - great meat, no frills and bottles of Qilmes. Even now I don't know a place in the UK that comes close.
Sadly, it has become a victim of it's own success. You now need to book a couple of weeks in advance. They don't need to encourage people to come: they're full up two weeks in advance, and this shows in almost every aspect of your visit. From the couldn't-care-less receptionist answering the phone, to the legendary indifferent/rude/inept service. The quality of the steaks, which still probably makes it worth a trip, fluctuates greatly. Sometimes the meat is very ordinary, and at £20 a steak in a poky Hackney restaurant you take a gamble that could leave you recommending it to your friends with superlatives, or feeling as though you've been taken for granted and ripped off. By the size of their order book, the former is still the more likely, but this is no longer the hidden gem it once was. It's a packed restaurant filled with staff who just don't really care about you - they've got plenty more people coming in afterwards.

lots of reviews seem to be focussing specifically about service, of which we didn't any problem with. The staff were friendly and polite offering us good advice on the meat. My partner and I often worry about the rare to medium rare crisis! When our rare steaks arrived they were perfectly rare as they should be. However we needed them cooked a little more to which they obliged and the steaks returned just as we wanted them.

The problem was the meat itself. We ordered a sirloin and ribeye, which we know is a fattier cut of meat, but that is what gives a rib eye such wonderful flavour. But flavour here is the main issue, the meat just didn't have any depth of flavour at all. Argentinian beef is world renowned but the cuts here just didn't cut it at all! The sirloin was slightly more flavoursome however. The formula and vibe of this place is great but they need to seriously re-evaulate their meat supply. Wine and sides were all fine, great triple cooked chips!

Went on Sunday evening at 6pm and found the service excellent and the food wonderful. The Parrillada Deluxe was a real meat feast, too much for me the wife and child but we'll down size next time. Cooked to perfection (medium rare) and really quickly too. Beautiful bottle of Red (Guggenheim.) Not a massive choice of side dishes but you know what; I preferred that, the meat is the star, just order extra salad if you want. Could do with sharper steak knives and the bathroom could do with some TLC, although very clean. Look forward to going again with a bigger party next time. Surprised at negative feedback posted previously, either it was unfair or the staff have made great efforts to improve.

Very disappointed with this restaurant. On the recommendation of a friend we went there last saturday night and from the moment we walked in it went pretty much downhill.

The waiters didn't seem to want to bring over a menu, we were in and out within 45 minutes having had 2 courses, and the food wasn't great.

Once we had ordered our food the waiter brought over a few slices of bread and two jacobs crackers...nice.

My starter of Serrano ham with palm hearts was very average and was served with what was clearly a shop bought thousand island dressing.

My biggest gripe however was the tomato and onion salad we ordered to accompany our steaks - this conisted of a small metal bowl with two quartered pale tomatoes and a few slices of old onion.

No presentation, poor produce and £4.50!!We certainly won't be going back - although I maybe should give an extra star to the only waitress working there on saturday who was very helpful.

If you are thinking of going to this restaurant, then please do so before reading any of these reviews, go to this restaurant without prior judgements and form your own opinions first.

I went on the recommendation of a friend and read these reviews and was to say the least apprehensive as to what awaited me, had i just gone on the recommendation and not read the review i would of been more relaxed.

Once seated myself and two friends awaited the rudeness and bad service we had read about.

What in fact we had was great service brilliant food(portions were very generous to say the least) after the first mouthful and the pleasant service all misconceptions had disappeared, the place was full to the brim and everyone enjoying themselves and me and my friends delighted in seeing all the gastronomic proportions of steak available.

Everyone seemed to want to take home their own doggy bags. I honestly think this was a great place and would be happy to recommend this to friends so please go and try.

Truly appalling place. Four of us went well out of our way on a visit to London on Saturday night last (22/08/09) to eat at this restaurant, as it had been recommended.

I have never been treated so badly in an eatery in my life. It is difficult to know how to begin to describe the contempt with which we were treated.

Many of the myriad problems were down to the waiter, who persisted in blatantly sneering each time we asked him a question.

At the outset he snapped at us when we tried to place an order with him saying his "brain couldn't cope". We had to repeat our orders three times despite the fact that the menu is very limited.

He then returned to the table at least three further times at intervals of some five minutes apart to ask us again what we had ordered and how we wanted our steaks cooked (the steaks were later not cooked to specification).

Notwithstanding this, only three starters were slammed down rudely on our table. When my husband asked where my starter was the waiter shrugged his shoulders and said "what's the problem, it'll be here in 5 or 6 minutes".

Some time later I received my cheese - a gloopy, congealing mess which was rapidly hardening on the cheap tinned plate on which it was served.

Word limits will not allow me to further describe the issues which arose throughout our awful meal, but suffice to say after further repeated abhorrences from the 'waiter' the final straw came after we received a bill with a large 'gratuity' added to it, which naturally, we refused to pay.

We were told that the owner was there that evening and so we asked to speak to him to complain. Our requests to speak to him were repeatedly ignored, despite one of our party approaching the kitchen area.

This awful awful place ruined our entire weekend visit to London. If my review prevents even one other group from having a similar experience to ours, it will be worth it

My wife and I ate at Buen Ayre recently. We sat on stools at the high table that overlooks the grill.

While we were there we saw some interesting behavior. Just after we arrived a couple sat down near us.

They ordered one of the large mixed grill platters. They couldn’t finish most of the meat, especially as the girl was focused primarily on eating the sausages.

We were relieved when they asked to take the remaining meat with them. After the waitress gave the platter to kitchen assistant he gave the chef a nod and packaged up only the inexpensive cuts o meat for the couple.

My wife and I were shocked when he put the meat back on the grill. We watched very carefully to see if the meat would be served again to another table.

Fortunately, it wasn’t. The tall kitchen assistant took it off the grill, sliced it up, and had it for his shift meal.

One can question his scruples but I guess it shows that the staff stands behind their product.