As a long-time immigrant accostumed to fixing a quick sandwitch over lunch pretty much everyday, I sometimes get a nostalgic craving for a real Italian pizza, a long sit-down meal in a place with a good atmoshpere, where food is conceived as a pleasure, rather than as a "must-do". These are the times I then go to Mimmo's, undoubtedly one of the most genuine Italian restaurants in London.
A first praise goes to the staff, always so welcoming and accomodating. The waiters are very polite, and the owner himself, a very friendly man with a charming savoir-faire, will often come along with a sunny smile to make sure that everything is ok. Having been there many times, I know the waiters by name and I feel treated more like a friend than like a customer.
The food: being a traditionalist, I have tried very little variety in my menu choice. I always go there to get a specific kind of pizza (Margaritana), and have never been disappointed with it. In fact, I am always very excited when I know I'm going there for dinner and have a Margaritana awaiting for me. It takes a specific palate to appreciate it fully: people who are accustomed to more "turistic" pizzas, to hard crusts and so on, will probably miss the delight of the creamy bufala mozzarella or the softness of the doe. But if you are looking for a proper Neapolitan pizza, you cannot go wrong at Mimmo's.
The atmosphere: as said, the place has a warm atmoshpere. While being a high-class restaurant, it has a homey feel to it. The staff will be polite and attend after you, chat with you, advise you and accomodate every requests. Yet they are not so invasive that every 2 minutes you have someone refilling your glass and asking if everything is ok (I hate when that happens. I can re-fill my glass myself and I like eating in peace).
Prices: I usually spend between 20-40£, depending on whether I'm simply having pizza and beer or whether I'm feeling fancy and indulge in larger meal with starter, dessert, liquor. I feel like overall this place is very good value for money (especially comparing the pizza to Dominos and the like!), but be warned that if you go there to enjoy a proper meal with pasta, meat and good wine, you will obviously go easily over £60. This is a higher class (though not posh) restaurant, so be ready for it.
If you want to truly enjoy the place, I would recommend trying to avoid going during peak time (e.g. Saturday evening and such). The place will be packed, the waiters very busy and pressured, and you may miss the relaxed atmosphere I have been praising so far. Aside from that, enjoy my favourite restaurant.