The website for the Holiday Inn Bern Westside says they have a swimming pool. Well, not really. But. But they give you an entry every day you are there to the water park which is at the far end of the attached shopping mall. The water park is multi storey, with several different areas and a water slide. You can swim, enjoy bubbles, play with various water toys, sauna, steam room and more. The area is almost all inside so there are some echoes, and I wouldn't - as an older adult - want to pay the public price but as an included perk of staying at the hotel it is good.
The mall has lots in it, from a cinema complex to a McDonalds and a Subway, an ice cream place and a frozen yogurt place, and an Italian restaurant. A department store and a large MMMigros supermarket, as well as many small stores. At the far end there is a Migros restaurant. Note that the hours of the restaurant mimic Migros restaurant hours in supermarkets - closing early for dinner during the week, and as early as 5pm on Saturday, and - like the rest of the mall but not the water park - closed on Sunday. A good source of tasty and inexpensive (for Switzerland) hot and cold food. In a nice environment - comfy chairs.
You will be at the end of the number 8 tram from the centre of Bern (about 15 or 20 minutes if memory is right) and the door of the hotel is right at the turning circle so it is maybe 30 seconds to walk. Another 30 seconds or so is the SBB train station which has four trains an hour to Bern main station in less than 10 minutes and either zero or one stops.
The desk will give you a Bern Ticket when you check in which is valid on all transportation in the city of Bern for the duration of your stay. It will work on the trams, the buses, the electric buses, the funicular behind the parliament and the elevator down to the lower town behind the cathedral. And the trains, but only within the city. If you want to go to Murten or Thun you need a proper ticket. The Bern Ticket is also valid on the funicular up the Gurten mountain which has all sorts of fun stuff at the top including a ride-on railway train for the kids, a lookout tower, a restaurant, and some other good stuff for the kids and adults. Easy walk from the tram stop to the funicular, but a little steep for some elderly folks.
Parking is CHF25 a night so adds up, and breakfast for people on Reward Nights isn't cheap, but it is very good, and they also do a light breakfast at the bar.
The rooms are comfy, the A/C works a dream, there is plenty of light and plenty of electric outlets (both Swiss and German shape) and the beds are very good. The soundproofing is good. The lifts/elevators are fast. Staff uniformly helpful and friendly (over several stays) and there is usually a jug of herbal water at the desk in the afternoon and evening.
By the way - it probably isn't obvious - we rather like the place. Oh yes, if you get a room not overlooking the train but overlooking the mall, the view over to the neighbouring farms and hills is very pleasant.
I'm hoping to be back there in about two weeks.