>> However I have to rearrange my booking in Grindelwald and Murren. I know most of you not recommend Grindelwald but I like the scene from the Jungfrau Lodge Hotel (see attached photo). Can you describe how tourist of Grindelwald so that I can reconsider my plan.
I don't really understand your last sentence. Would you be able to say it again in different words?
>> My 8 years old son and I shall stay in Jungfrau region for 6 days. Now I plan to stay in Murren, Grindelwald and Wengen for 2 nights each. Or skip Grindelwald, then 3 nights in Murren, 3 nights in Wengen
Changing hotels takes up a lot of time which could be better spent sightseeing. Personally, I would spend the whole 6 nights in Wengen, but if you want to stay in another location as well, I would choose either Grindelwald or Mürren, but not both. It is very easy to get around the Jungfrau Region, and while it might take a bit longer to get somewhere, e.g. Grindelwald to Mürren, every trip in this area is a scenic experience, not just a means of getting from A to B.
>> I am wondering on Day 1, we shall miss the part from Brienz to Interlaken Ost on Goldpass Line, is this a pity? if so, I shall plan again.
Day 1: Luzern > Lungern > Meiringen: The Reichenbach Fall & Aare Gorge > Brienz > Cruise on Lake Brienz: Brienz to Interlaken Ost (visit Grandhotel Giessbach & Giessbach Falls) [Stay: Murren]
If you are going from Brienz to Interlaken Ost by boat instead of train, you won't miss anything, because the train travels along Lake Brienz from Brienz to Interlaken Ost. You will actually have better views from the boat, as you can see both sides of the lake and the surrounding mountains.
As for all the plans you have for this day, I don't think you will manage to fit them all in. Have you planned everything out with the Swiss Timetable, and allowed enough time for each activity? What do you plan to do with your luggage?
>> I think Hotel Belleuve can pick my baggage at train station based on Kim's report and Alpenrose sharing. I just checked google map, it takes 9 mins walk from train station to hotel, is this not correct? how much time for a normal walker?
Yes, 10 minutes is about how long it takes to walk. The walk to and from the hotel is easy - fairly level from the station until you get close to the Hotel Schönegg, then a very short distance up a steepish hill, then down a very gradual slope to the Hotel Bellevue.
On your days of arrival and departure, the hotel will transport you and your luggage between the station and the hotel in a small yellow electric vehicle. You can ring them from the station. There is a special free phone at the station next to a large board with a list of hotels and their contact numbers.