Mercure Hotels complaint: Lack of information to guests

On arrival at the hotel on Friday 27th September 2024, we were greeted by friendly staff. We paid for £20 parking for two nights.
During the early hours of the morning, around 1.30am the fire alarm went off in all the rooms. This in itself is very stressful. My son, daughter in law and two grandsons, aged 6 and 11, were in the corridor along with other guests. My youngest grandson was in tears, the other grandson was shaking from head to foot in shear panic.
The alarm stopped while we were all in the corridor. So we all including guest went to reception. It would seem that a guest was filling up a bath using the shower and left the bathroom door open. Causing the alarm to go off. So false alarm. My grandsons were still badly shaken and were were not exactly feeling relaxed in our room. 4.30am the same thing happened! Same reason!
We went to a family celebration Saturday 28th September on arrival back to the hotel car park ourselves and my son couldn’t park, the hotel carpark was full! What! We paid £10 per car and can’t park, Dreadful, where are the signs to say KEEP the bathroom door SHUT when running the shower. Where are the signs to say you may NOT be able to park in the hotel car park so you’ve got to go to a public car park . The answer nowhere. We were told people don’t read signs , very negative reply. .