This might be the cheapest Westin in Europe - Frankfurt.

The location is great, right on a commercial street, with a subway station nearby and a row of taxis at the door. It's a 20-minute walk from the train station (a bustling commercial pedestrian street) and is located in a slightly older building. The hotel was renovated a couple of years ago, so the interior facilities are very modern, the hardware is good, and you can use the Marriott app's electronic room card. Original wood furniture, simple and generous modern style, capsule coffee machine. The basic room type is also very spacious, with a large table and sofa. The hotel has a beautiful skylight atrium on the first floor, which is a bar area. The only downside is that there were not enough front desk staff when checking in at night, and I had to wait in line for 20 minutes. The attitude was okay, but a deposit was collected according to the number of days of stay. In Europe, few hotels charge a deposit, most are credit card guarantees or pre-authorizations, although the amount was not large this time, it was a bit unexpected. The hotel price is not expensive during non-exhibition periods, 150-200 euros, the same grade of hotel in other cities in Germany is 200-300, France and Italy will be more expensive. German hotels are generally reasonably priced, as long as you don't catch up with holidays and exhibitions, it's similar to domestic ones. Even in Bavaria, only a few boutique resort hotels in the mountains are expensive. Perhaps because the proportion of tourism is low and the city is not crowded, hotels are not scarce.