The first time I ever tried L'entrecote was when we happened to stumble across the Paris location of Le Relais de Venise. A huge queue outside the door was a great sign it was something fun and interesting! We were not disapointed - yum yum yum! No menu, just what is offered (and double servings!). We were so pleasantly surprised by the quality and cost.
Service is fabulous as i would imagine having only one option to serve reduces stress! The wine is a little expensive at around £10 a glass but overall it really is value for money.
I went to the Soho location to catch up with a friend and it was great to once not have to tell the server we "needed more time" to view the menu or be interupted when we were nattering away.
Overall, a great spot which is reasonable and seriously scrumptious (if you like steak of course!).