Sutomore beach is a lovely wide beach, located in a city Sutomore, 10km from Bar city. It's mostly a stony beach, with a small pebble so it's possible to swim without swimming shoes. There is a big free parking next to the beach but in a high season, it's totally occupied so it's pretty hard to find a parking place.
There are a lot of restaurants, cafes, shops with stuff for tourists along the beach. As well as places where you can buy a tasty ice-cream which is very actual at the middle of summer heat. There are a lot of hotels, apartments you can rent, or private villas you can choose to spend your vacation, near and a bit farther from the beach - depending on your budget and special requests.
This is one of the best beaches in Montenegro and a lot of tourists chose it as a resort. The city is mostly tourist so the beach and the sea there are almost always very clear, there are mostly no big waves there. And you can find all the needed infrastructure close to the city, including the bus station and it's pretty close to international airports.