Spa hotel/resort – the Alps

Hi all, I’m wondering if anyone had a recommendation for a spa/wellness resort/hotel to stay for 4 nights to wind down after our wedding next year. We’re hoping to spend about ~€1500 for the 4 nights in early April. We originally wanted to go for the Dolomites but they are a bit further from airports for us so have shifted towards the French Alps now for ease of transport. Open to options though. There are countless options so very difficult to pick. Thanks!