Athens here we go George: the first choices are recommendations and others are George Calombaris shared in June 2017, a well-known Greek chef living in Australia. I am certainly no expert on Athens but if you go to Greece visit ToThalassaki in Tinos as it is wonderful and genuine specializing in kilometer zero, and here is the list:

ToThalassaki (not in Athens)
Bay, Isternia 842 01
T. +30 2283 031366
https://www.instagram.com/tothalassaki/

Name: Line BAR
Note: They are ranked 8 in the world: https://www.theworlds50best.com/bars/the-list/line.html
Address: Agathodemonos 37, Orestou 1, 118 53 Athens, Greece
T. +30 21 1750 7185

Name: Vezene
Note:   Bistro style & Beef and he operates a Japanese styled yakitori restaurant (never been)
Address: 11 Vrassida Str Athens 11528, Greece
Web: http://vezene.gr
https://www.instagram.com/arivezene/

Name: Capanna
Note: Pizza & Italian food
Address: Ploutarhou 38 | Kolonaki, Athens, Greece
T. +30 21 0724 1777

Name: Hytra
Note: Memories from Greek flavors
Address: ONASSIS CULTURAL CENTRE 107 – 109 SYNGROU AVENUE
11745 ATHENS
http://hytra.gr

Name: Varoulko
Note: Fish
Address: Akti Koumoundourou 52
Mikrolimano, Piraeus T +30 210 5228400
E-mail: info@varoulko.gr
http://varoulko.gr

Name: Seychelles
Note: Greek
Address: 49 Kerameikou street, 104 36, Metaxourgeio, Athens, Greece
http://seycheles.gr/en

Name: Kritkos
Note: Lamb Chops
Address: 49 Eolou | Kantza, Athens 153 51, Greece
T. +30 21 0665 9061

George Calombaris and his Athens Top Picks begin here posted in 2017 on Mesubim:

Name: Barbounaki
Note: Amazing seafood one of my favorites. Must have the salads and Tarama
Address: Aggelou Metaxa 48, Glyfáda, Greece
Web: https://www.facebook.com/pages/Barbounaki/465342506873602

Name: Tsi Tsi
Note: Great souvlaki
Address: A. Metaxa 50, 16675 Glyfada
Web: http://tsi-tsi.gr/?l=en

Name: The Clumsies
Note: Amazing cocktails
Address: Praxitelous 30, Athens
Web: http://www.theclumsies.gr/

Name: Balthazar
Note: Great for dinner and cocktails. My mate Christoforos Peskias is the chef.
Address: 27 Tsocha Str. & Vournazou Str., Ampelokipi, Athens, 115 21
Web: http://balthazar.gr/?lang=en

Name: Sweet Alchemy
Note: Owned by Stelios Parliaros, this place is awesome for sweets & cakes
Address: 24 Irodotou, Kolonaki 10675 Athens
Web: http://www.steliosparliaros.gr/

Name: Matsuhisa by Nobu – Astera area
Note: Amazing views
Address: 40, Apollonos street, Vouliagmeni, Athens, Vouliagmeni 166 71
Web: http://www.matsuhisaathens.com/

Name: Ark
Note: Great for dinner, bread there is amazing
Address: Grigoriou Lambraki 2, Glyfada 16674, Attiki Greece
Web: http://www.ark-glyfada.gr/

Name: CTC Restaurant
Note: Awesome cutting edge food for dinner
Address: 14, Oumplianis Str. & Diocharous 27, Athens.
Web: http://ctc-restaurant.gr/

Name: Kalamaki in Kolonaki
Note: Awesome for lunch, cheap and fun
Address: 32 Ploutarchou Street & Patriarchi Ioakeim Street, Kolonaki  106 76 Athens Attica

Name: Funky Gourmet
Note: 2 star restaurant – the best in Athens. Dinner only
Address: Keramikos area: 13 Paramithias str. and Salaminos
Web: http://www.funkygourmet.com/en

Name: Stick bar in Kolonaki
Note: Simple but yum
Address: Patriarchou Ioakim 48, Athina 106 76, Greece
Web: http://www.stickbar.gr/

Name: O Kostas
Note: Oldest souvlaki bar but amazing
Address: Pentelis 5, Athina 105 57

Name: Lokomades – Only does loukoumades
Note: Only does loukoumades – great
Address: 59 Socratous Omonia

Name: 42 Bar
Note: Awesome bar – Chris Houseas
Address: 3 Kolokotroni, Athens 105 62, Greece

Name: Telemachos Grill Restaurant
Note:bGreat steak restaurant
Address: Panepistimiou 10 Athens 10671, Greece
Web: http://www.telemachosrestaurant.gr

Name: Athiri Restaurant
Note: More traditional Greek food
Address: Plateon 15, Athina 10435
Web: http://www.athirirestaurant.gr

Name: Nolan
Note: Great greek japonese flavours
Address: 31 Voulis Athina, 105 57 Greece
Web: http://www.nolanrestaurant.gr

Name: Aleria
Note: Great chef and mate Gikas Xenakis. A must eat is his pasticcio
Address: Megalou Alexandrou 57, Metaxourgio Athens 104 35
Web: http://www.aleria.gr/en

Name: Paleo Wine Store
Note: Best wine bar and simple food
Address: Polidefkous 39, Pireas 18545

The List from EAL – a groomed traveller seeking those delicious hot spots: