We stayed at Tschuggen for 3 nights in late January. The hotel is easy to find - right of the main street and a short walk (5 minutes with luggage) from the train station. Our room was a great size, very clean and surprisingly quiet! The bed was also very comfortable. The owners are friendly and especially helpful in providing directions and tips on the local attractions/mountain activities. I can't say enough good things about this hotel, especially in light of the fact that it's one of the most reasonably priced hotels in Grindelwald!
If you're looking for reasonably priced dining options - I would strongly recommend the restaurant directly across the street in the Hotel Eiger. When we were there they had nightly specials including a 10CHF burger with pommes frites!
