Sevan, Lake Sevan Region, Armenia
Transportation: marshutkas from Yerevan (take them near the metro station Yeritasardakan), price: 500dr
Sevan is a high-mountain lake, so big that you feel like being on the seaside. Be carefull, even in summer, if you plan to stay for the night, take warm clothes, it's always much colder than in the valley.
Don't stay near the peninsula after visting the monastery. This is the most touristic place of the lake. You should go further on the left by the road (hitchiking, taxi, private car 'cause there are no marshutka), something like 15km further, you'll find an on-air restaurant, or you can stop whereever you want on the "coast", it's much more pleasant, and almost desert.
Food: you should bring what you need unless you plan to go to the restaurant, because there are no markets near the lake, and buying food and bread at the restaurant is quite more expensive.