The Espresso Room

Excellent, excellent espresso coffee, and though I'd say the filters are a bit lacking, this must be taken as a small criticism; I'd still drink them. On another note, bizarre review. The crema's too thin? If the espresso tasted perfect that really seems a moot point.

I have been visiting ER since it opened and I think it's the best flat white in town . Perhaps, Mocca or Latter is not so good (have never tried) but if you have a passion for a strong and tasty coffee -- this is place for you. I think there is some kind of a joke in this name as 2 world renown hospitals nearby doesn't have an ER:)

The staff are very friendly, the coffee tastes good but it isn't HOT!! Can't bear cold coffee so won't be returning.

This place is an independent coffee shop star! Excellent beans, love that they do guest coffees but you also gotta love their house, Square Mile. Excellent espresso!

We went out of our way to try this place due to all the positive feedback. Perhaps they specialize in lattes of flat whites, in any case, my wife and I ordered two mochas. Both were extremely milky, barely luke-warm, weak in coffee and a faint taste of Choc syrup. We were quite disappointed especially at the price of 3 pounds. Unfortunately we were in a hurry so couldn't give feedback at the time, but if your a mocha lover beware!

This place is absolutely fantastic, I have been to a huge selection of coffee shops around London and this rates at the top. A very smooth Latte indeed. Excellent, would highly recommend it to any coffee lover. (stay away from the chains ppl)

A gem of a place. Friendly service and expertly crafted java.

I've been going here for over a year. Excellent drinks and great staff. @Sarah McIlwaine - shame you didn't enjoy your drink - did you say anything at the time? I've only had a bad drink once and they were really keen to put it right.

I've been using this place twice a week for about the last six months. The coffee has been consistently good and the best I have tasted in London. They deserve all the praise they have been getting. I guess the other reviewer likes to go against the crowd.

I went to Espresso room with high hopes, it being recommended on Twitter! Quite disappoited, a far too milky flat white! Everyone seems to love it, but I'm sticking to my absolute favourite, Flat White in Berwick St Soho!