Hello, for 100 Euros per night you can easily find hotels around the local night life area in St Julians also knows as Paceville. Most of the hotels in this area are good, although, the area is very noisy and jam packed with people during the weekend. I would avoid cheap apartments or very cheap hotels in this area as party goers use these places as cheap accommodation.
As hotel prices vary depending on the booking date, you could possibly also find a hotel in Sliema or St Julians for 100 euros, although, generally the prices are around 120-190 Euros a night. Sliema is a much much more tranquil area, with beautiful views and little to no noise. I would highly recommend this area for a "Mature" visitor.
Some other noteworthy mentions are also the big hotels that are excellent (Westin, Hilton, Radisson..). These hotels are located on the outskirts of Paceville (ranging from 200m-500m from the centre) and you should have no problems regarding noise and people.
The Sliema/St Julians area is very popular so finding reviews shouldn't be a problem.Edited: 14 May 2018, 10:12
If you can tolerate basic and simple there will be a choice available. Just be sure what you are booking as some rooms only have windows onto internal shafts, this being a common feature in older buildings.
Best study the reviews as sadly I think there will be a degree of compromise.
Qawra might provide better options but it is very much a tourist area. B&B might be another way to go?
Choice Holidays ( NOT First choice ) have some decent bargains and are very helpful.
They have a Freephone number so it might be worth while giving them a ring.
The call is taken in their Malta office but will cost you nothing to give them a ring and see what they can offer
Here is the link.
Hope they can help.
Thank you so much for all your replies. It does look like 100 euro a night would not be sufficient. I was saving up to go on a really good holiday later in the year but this week off just came up. I will up my game and go for a nice hotel for up to 150 euro a night - might as well enjoy my week in Malta. Thank you again for your advice.