Can any body give their suggestion is this Hotel a nice place to stay

The opinions you might get online are unreliable in general.
They are very subjective and individual. People are more likely to write if they had a bad experience.

What one person might view as "intrusive and aggressive staff" is "helpful and friendly staff" by another. Your "great lively fun place" will be "loud, terrible and noisy" to the next person.

The same hotel will have beautiful and very nice rooms also small cold or uncomfortable. High price is not a guarantee of good service (or: low price isn't a sign of lack of it)

You come for 8 days! You will be out sightseeing, on the beach, streets, partying etc You'll probably be in the hotel only to sleep and wash.

St Julian's is always full of young people. Just come and enjoy the charm and magic of Malta!