>A suite instead of a room?
Sometimes. Room upgrades in general are a thing. I like it, especially when traveling with my SO - the extra space is nice!
>Do you want to stay in a same corporate business hotels that you are doing a lot for business in your free time as well?
Sure. Starwood and Marriott have a lot of nice hotels. W's are pretty ubiquitous and don't feel very corporate. The Luxury Collection is a bit mixed on whether or not they participate in the rewards program, but enough do that they've got some really cool spots that do, and the LC stuff is all unique. Even for chains that are more corporate feeling, like the Ritz Carlton/JW Marriott/etc, they're frequently very nice. The Westin in Tokyo is convenient for the city-loop JR green line, has a fantastic breakfast buffet and lounge with free drinks and an amazing view, etc.
Generally when I'm traveling personally I don't spend much time in my room. I want something that is conveniently located, has good breakfast, is clean, and spacious enough that I can keep all of my crap out of the way with room to spare. Getting all the points (and multipliers from having status) makes getting free hotel stays a lot easier, and means I can afford to travel more frequently.
>Hilton give me a free bottle of water when I stay.
Same with Starwood/Marriott, but, considering what some hotels charge for water bottles, free bottles being replenished every time housekeeping comes through is great. Especially if I've had a long night out drinking.
There's other perks, too. Early/late checkin - I don't have to worry about if I arrive at the airport at 8am or if my flight is at 7pm. I don't need to rush out of the hotel at 11am, or drop my bags and then have to go kill time if I get in early.
Conversely, I care much less about my Platinum airline status. I only get upgrades to first class on short flights automatically, and I mostly take long ones. Upgrades on long flights consume my upgrade awards. I get free "premium" seats in economy, but they're not huge upgrades and are pretty cheap upgrades in general. Priority boarding is nice, but I see people slip into that line all of the time without status and it's usually more trouble than it's worth for the attendant to kick them to the back of the line. Priority luggage actually getting it to me faster has been very hit or miss. I don't lose any sleep over my airline status looking like it might drop a level. I make sure I never have to worry about that with my hotel status.