Ohrid is the largest lake in Macedonia and is located southern part of the country. The lake is shared with Albania, but the world heritage site portion is entirely within Macedonia.
Ohrid is very easy to visit and is one of the most popular tourist destinations in Macedonia with plenty of hotels and restaurants in town.
Most of the cultural and historic can be reached by walking to taxi in town, but if you want to explore the rest of the lake you should either go on a boat trip, or rent a car.