This letter is well-written and effectively communicates the situation and request. 

The letter is clear and to the point, conveying the main message without unnecessary details.

The letter effectively expresses gratitude for the landlord’s assistance, making the tone polite and appreciative, suitable for a semi-formal letter.

The letter is well-constructed, articulating thoughts in a clear and respectful manner.

The letter follows a clear structure with suitable paragraphing and natural use of linking words.

The ideas are logically presented, arranged well into distinct paragraphs.

The letter ends with a polite closing statement and a semi-formal signature.

This letter contains a wide range of appropriate vocabulary which is used accurately and naturally and demonstrates a sophisticated control of language. There are no spelling errors.

Some examples of advanced vocabulary are:

Regretfully:  I am writing to let you know that regretfully, I will have to move out of your apartment by the end of the week.

I’ll never forget: I’ll never forget how when I first arrived and could barely speak English, you helped me

Fallen through: She organized a place to stay but it has fallen through.  

Verify:  I can verify that she is trustworthy, will look after the place well and will always pay her rent on time.

I appreciate your understanding: I appreciate your understanding during this challenging time

This letter uses a very wide range of both complex and simple appropriate grammar structures which help to convey ideas with clarity and precision.

• Complex sentence structure: I have a lovely friend called Ninung who arrived here in Melbourne last week.  
• Participial Phrase:  when I first arrived and could barely speak English, you helped me organize all my utility bills….
• Conditional sentence: If you are interested, I can have her contact you immediately and we can leave my bond money with you until she moves out.
• Modal verb in passive voice: .  I can verify that she is trustworthy, will look after the place well and will always pay her rent on time