Choose your fabric wisely since people may want to put up their feet (and shoes). Outdoor fabrics can be smart; steer clear of linen and fabrics with high amounts of rayon or viscose. Take a swatch home and test it out with dirt red wine or whatever you think your coffee table will encounter to make sure your fabric choice can handle it all. Keep an upholstered ottoman 18 inches from a sofa or chair so you can easily put up your feet and make sure the height is consistent with the surrounding seats.
Coffee tables should be the same height as the surrounding seating with 18 inches being a good average (although it will depend on your furniture). If you select a coffee table with a lip make sure the lip isn’t higher than the adjacent seating or you’ll end up hitting your drink against the lip when you try to set it down. The idea is to put your drink down not up.