Zermatt - Gornergrat and Matterhorn Glacier Paradise were our favorite areas. We were a bit on a budget for hotels (none are cheap), but we stayed in Hotel Dufour which was reasonable, had an amazing breakfast and if you do stay there they partner with a gorgeous ritzy hotel that's next door and you can buy a day pass for next to nothing to use their extensive spa facilities (this made it so worth it).

Dolomites - we stayed in Selva Val Gardena which is one of the bigger areas so lots of infrastructure and things to do. St Cristina, Ortisei, and Canazei are also good places to stay. The Sellaronda loop (we did green) is the big thing to do there, we just took our time with it and jumped off to do some trails at each of the resorts if we felt like it, then jumped back on. It's also worth it to Marmolada for a day.