The best area to stay in Mon, Östergötland County, Sweden, is around the historic town centre of Vadstena.Vadstena is a small, picturesque town located directly on the eastern shore of Lake Vättern. It's well-known for its impressive Vadstena Castle, a beautifully preserved Renaissance castle, and the Vadstena Abbey, a significant spiritual site with a rich history. The town centre is quite compact, making it very walkable, with cobblestone streets lined with traditional Swedish buildings housing cafes, small shops, and restaurants. The harbour area offers lovely views of the lake and is a pleasant spot for a stroll.Couples often find Vadstena particularly appealing. The romantic setting of the castle and the abbey, combined with the tranquil lake views and the town's quiet charm, makes it ideal for a relaxing getaway. Many hotels are housed in historic buildings, offering a unique stay close to all the main attractions.For those interested in history and a peaceful break, staying within walking distance of the castle and abbey provides the most convenient and enjoyable experience.