Good lighting absolutely critical, which is why top hotels will invest massively in it.

First impressions are very important and created instantly, which is helped dramatically by good lighting.

Then, there is creating mood and atmosphere.

Good lighting will enhance or reduce your guest's mood and feelings, so good lighting is extremely important.

This should be right throughout the entire hotel including foyer, corridors, rooms, buffet rooms, bars and outdoors.

The colour of lights - ideally warm white - is what you should look at, as well as to make sure the light are neither too dim nor too bright (if anything, pick too dim). 

Superb lighting picks up and invigorates even the worst of décor and furniture - it is an unbelievable optical illusion!

Bring in a lighting designer to do the job with credentials and a good resume, and make sure you examine in person at least one hotel they have done.

I have examined thousands of reviews about hotels, and noticed that lighting was at least mentioned in many of them!

For example: bad or dim lighting in rooms.

Travellers expect good lighting and will not even notice it. But when the lighting is bad, they will most definitely notice it and it can ruin their entire stay.

Foyers are absolutely critical because they are the first impression a person will get.

Hotels will invest tens of thousands of dollars in huge, oversize lights to give the impression they are a prestigious hotel. That might seem like a lot of money, but it is the cheapest way to give that impression by far!

Lighting is very important. Rooms should have all types of lights: ceiling, wall, LED strips, table lamps, floor lamps and desk lamps.

One thing that is most often overlooked in hotels is lighting in corridor.

Don't make the person feeling cramped, and don't make the corridor look cheap.

Really important that light switches in hotels are intuitive.

No point in having magnificent lights if the person spends 10 minutes trying to find the switch every time. They are only staying there for a night or two, so the switches have to be idiot proof and 1000% intuitive.

One thing that is critical is getting high quality lights that can handle years of on/off. Changing lights is very expensive so buying quality, with a high lifespan, is very important. It might be more expensive in the short term but will save massively long term.

Also, when you buy bulk for many rooms, buy lots of spares.

All lights - and I mean ALL lights - eventually get discontinued. If you don't want to start having odd lights out when they fail, then gets spares.

Conference rooms in hotels must be extremely well lit.

Often companies will choose the hotel for the conference room, and spend a week every day in there. So make sure it is lit perfectly.