I've eaten at all of them. You are definitely going to get different opinions on all of the restaurants!
Coral Reef - it's fine, nothing great. the aquarium is lovely
Le Cellier - food is good, but a bit pricey. the restaurant feels very cramped IMHO
Rose and Crown - good, though I'm not a big fan of British food.
Chefs de France - lovely atmosphere, food is incredibly salty and mediocre
Monsieur Paul - lovely intimate restaurant, excellent food and service. if you want a signature in EP, this is the one to go to, IMHO
Marrakesh - nice atmosphere, food is pretty bad
Spice Road Table - our favorite TS in EP. Great atmosphere and food and incredibly friendly staff
Tokyo Dining - used to be great until they changed their menu. Really sub-standard sushi. Staff is very nice!
Teppan Edo - overly salted, not very entertaining. I'd save your money
Via Napoli - really good pizza!
Tutto Italia - overpriced, subpar Italian food. If you want good Italian, go to Il Mulino at the Swan
Biergarten - kind of fun, food is good, have never had good table mates so kind of uncomfortable seating configuration. If you don't mind eating with people who may not acknowledge your existence, go for it
Nine Dragons - used to be great! honestly, haven't eaten here in years after having a very bad experience
Akershus - good food, lovely character interaction. if you aren't going for the charaters, a bit pricey
La Hacienda - the better of the Mexican restaurants, atmosphere is ok
San Angel - atmosphere is amazing, food is inedible.