you can build that firepit for under go to any big box home improvement store and browse the garden dept. look for retaining wall blocks. For a modest sized pit, buy 26 of them and stack them 13 to a circle.
when your space is small, to make it an extension of your indoor living space. Use hardscaping to create entertaining areas, and open those doors wide and let the spaces work together. Use furnishings outdoors, plant grass for add planter