I love Belgium for remote work. Cities feel cozy and lived in. Think cobbled streets, small canals, and lots of good beer. The vibe is relaxed and a bit arty. The weather is mild with rain often. Summers can be sunny and nice. Winters are gray but manageable.
Internet is fast and stable in cities. Coworking spots are easy to find. Most travellers enjoy the cafe scene for a morning of work. For some, the cost will be a relief. It is not super cheap but cheaper than London or Amsterdam. Good value for cafes and food.
Things to do are endless. Museums, music nights, bike rides, and chocolate shops. I once worked from a canal cafe in Ghent and it was perfect. I also read about beach volleyball at Ostend at sunset. The nomad community is small but friendly. Plenty of meetups and expat groups. Arguably not the wildest party scene. But a great spot to get work done and still have fun.