Cold hotel shower - what to expect

[WhatToAskForNow]

Staying in a hotel, shower was cold last night when room mate went for a shower. Room mate contacted reception and they said they'd try to get maintenance to check it out at some stage today.

They offered an empty room that I could use this morning to get a shower. Normally I'd roll out of bed and straight into the shower, but this morning my only option was to get up and get dressed, pack up my stuff and go to another room on a different floor (looking like I'd been dragged through a hedge).

They have since moved us to a different room, so that's good, but I'm not happy to pay full price for (1) one of us got a cold shower and (2) having to get dressed and go to another room for a shower.

AIBU to expect a reduction when I check out? What do you reckon I should expect / ask for?

Thank you for all the different opinions.

Just to address a few points:
1 - I never go without a morning shower, and I'd had a long day traveling before going to bed Friday night so definitely needed a shower Sat am.
2 - I don't have PJs so had to get dressed to go to the other room (on a different floor)
3 - They don't have a spa and didn't offer dinner / wine / anything.

At check out when I discussed it with the manager, they knocked £25 off the bill, and also gave me a £25 voucher to use next time I'm there. Can't argue with that!