Hello Emily, Nice to hear you abt gift certificate for your FIL, in geneva there are number of restaurants and international community means multiple choices of food available here :)
some mid-range restaurants are :- Café Gourmand , L'Europa in Rue du Valais, etc.
you can also find a list of restaurants and more info at http://geneva.travel/?p=453
please feel free to ask any other query u have, tc almost 8 years ago
If you like meat, roar, well-done or else, I can highly recommand you "Le Relais de l'Entrecôte". They have only one dish: twice a beef entrecôte with fries and homemade sauce. It's about 40.- per person but you wouldn't regret afterwards.
It is near the main bus stop "Rive" (buses 2,6,7,10 and tram 12). You don't need any reservation. Actually they don't take any. It is so famous they always know someone is going to show up ;) about 5 years ago